50s: "The Chirping Crickets" and "Long Tall Sally", Little Richard
60s: "Are You Experienced?" and "All Along the Watchtower" both by Jimi Hendrix
70s: "Led Zeppelin IV"* and "Walk This Way", Aerosmith
80s: "Appetite For Destruction" and "Sweet Child O' Mine"* Both by Guns N' Roses
90s: "In Utero", Nirvana and "Juicy", Notorious BIG
00s: "American Idiot", Green Day and "Crazy", Grnarles Barkley

There were two sweeps: Jimi on the 60s and GNR on the 80s. Zep came close in the 70s with Stairway being my second favorite songs of the decade. The * means it's my all time fave.

50s: Kind of Blue by Miles Davis, "Maybeline" by Chuck Berry
60s: The White Album and "Strawberry Fields Forever" by The Beatles
70s: Exile on Main Street and "Moonlight Mile" by The Rolling Stones.
80s: Daydream Nation by Sonic Youth, "Love Will Tear Us Apart" by Joy Division
90s: Nevermind by Nirvana, "Smells Like Teen Spirit" by Nirvana
00s: Yankee Hotel Foxtrot by Wilco, "All My Friends" by LCD Soundsystem
10s: Dark Twisted Beautiful Fantasy by Kanye West, "Runaway" by Kanye West

60s: Probably Highway 61 and God Only Knows
70s: London Calling and Marquee Moon
80s: Doolittle and Just Like Honey
90: Spiderland by Slint and Jackals, False Grails: The Lonesome Era by Pavement
00s: Probably The Meadowlands by the Wrens and 13 Months in 6 minutes by...The Wrens.
10s: Treats by Sleigh Bells and i don't know (maybe Rill Rill)

One sweep in mine and a couple come close. Desolation Row is right up there amongst my favourite 60s songs. Similarly Revolver/Tomorrow Never Knows are my second favourite album/songs in their decade. Marquee Moon, on top of being my favourite song of the 70s, is my second favourite album of all time, second to...London Calling. Debaser is my third favourite song of the 80s, behind Trilogy by Sonic Youth and Just Like Honey by the JAMC, whose album Psychocandy is nowhere near my favourite album. Good Morning Captain goes top 5 for its decade, as does Crooked Rain, Crooked Rain. And then there's the Wrens.

50s: No album, The Everly Brothers - "All I Have to Do Is Dream"
60s: The Velvet Underground - The Velvet Underground & Nico, Can - "Yoo Doo Right"
70s: Stevie Wonder - Songs in the Key of Life, David Bowie - "Moonage Daydream"
80s: Prince - 1999, Prince - "Something in the Water (Does Not Compute)"
90s: Madonna - Ray of Light, Björk - "Isobel"
00s: Björk - Vespertine, Annie - "My Heartbeat"
10s: Sufjan Stevens - The Age of Adz, Sufjan Stevens - "Get Real Get Right"

50s:The Crickets - The Chirpin' Crickets,Everly Brothers - "All I Have To Do Is Dream"

60s:Beach Boys - Pet Sounds,Kinks - "Waterloo Sunset"

70s:The Clash - London Calling,Bruce Springsteen - "Born To Run"

80s:The Smiths - The Queen Is Dead,The Smiths - "There Is A Light That Never Goes Out"

90s:Radiohead - OK Computer,Ride - "Vapour Trail"

00s:Arcade Fire - Funeral,Coldplay - "Yellow"

10s:The National - High Violet,Beach House - "Norway"

1950's: No album/"Johnny B. Goode" - Chuck Berry
1960's: "Abbey Road" - Beatles/ - "All Along the Watchtower" - Jimi Hendrix
1970's: "Who's Next" - Who/"Stairway to Heaven" - Led Zeppelin
1980's: "Thriller" - Michael Jackson/"Billie Jean" - Michael Jackson
1990's: "What's the Story Morning Glory?" - Oasis/"I Can't Make You Love Me" - Bonnie Raitt
2000's: "Funeral" - Arcade Fire/"Take Me Out" - Franz Ferdinand

An MJ sweep for the 1980's

1950s - Miles Davis - Kind of Blue; Chuck Berry - "Memphis, Tennessee"
1960s - The Beatles - Abbey Road; The Beatles - "Golden Slumbers/Carry That Weight/The End" medley
1970s - George Harrison - All Things Must Pass; Led Zeppelin - "Stairway to Heaven"
1980s - U2 - War; The Jam - "That's Entertainment"
1990s - Radiohead - The Bends; U2 - "One"
2000s - Green Day - American Idiot; M.I.A. - "Paper Planes"

'80s song, and '00s album were both really tough choices for me, which could easily be interchanged with 5 other titles each

30s: "Strange Fruit", Billie Holiday
40s: "Dust Bowl Ballads" and "This Land Is Your Land", Woody Guthrie
50s: "Kind of Blue", Miles Davis and "Johnny B. Goode", Chuck Berry
60s: "Highway 61 Revisited" and "Like A Rolling Stone", Bob Dylan
70s: "Who's Next" and "Baba O'Riley", The Who
80s: "The Joshua Tree", U2 and "Bette Davis Eyes", Kim Carnes
90s: "Automatic For The People", R.E.M. and "Common People", Pulp
00s: "Boxer", The National and "La Cienega Just Smiled", Ryan Adams
10s: "The Wild Hunt" and "Love Is All", The Tallest Man On Earth

Four sweeps.

50s: "Kind of Blue" and "So What"
60s: "The Velvet Underground & Nico" and "The End"
70s: "London Calling" and "The 15th" (Wire)
80s: "Closer" and "Once in a Lifetime"
90s: "Tindersticks" (the second album) and "Dry the Rain"
00s: "Illinois" and "Heartbeats"

50s: Kind of Blue, Miles Davis and "Take Five", Dave Brubeck
60s: Pet Sounds, The Beach Boys and "Sympathy for the Devil", Rolling Stones, but there's a ton of other song candidates.
70s: Born to Run, Bruce Springsteen and "Born to Run", Bruce Springsteen
80s: Thriller, Michael Jackson and "There Is A Light That Never Goes Out", The Smiths
90s: OK Computer, Radiohead and "Hallelujah", Jeff Buckley
00s: Funeral, Arcade Fire and "What You Know", T.I.
10s: My Beautiful Dark Twisted Fantasy, Kanye West and "Over", Drake

50s: Miles Davis - Kind of Blue / Little Richard - Tutti Frutti
60s: Sly and the Family Stone - Stand! / Louis Armstrong - What a Wonderful World
70s: Steely Dan - Aja / Brian Eno - By This River
80s: Prince - Purple Rain / Michael Jackson - Billie Jean
90s: Portishead - Dummy / Depeche Mode - Enjoy the Silence
00s: Sufjan Stevens - Illinois / Sufjan Stevens - John Wayne Gacy Jr.
10s: Beach House - Teen Dream / Beach House - Walk in the Park

50s: Ornette Coleman - The Shape of Jazz to Come / Chuck Berry - "Johnny B. Goode"
60s: John Coltrane - A Love Supreme / The Kinks - "Waterloo Sunset"
70s: King Crimson - Red / The Beach Boys - "Surf's Up"
80s: Public Enemy - It Takes a Nation of Millions to Hold Us Back / Pixies - "Debaser"
90s: My Bloody Valentine - Loveless / My Bloody Valentine - "Soon"
00s: The Avalanches - Since I Left You / TV on the Radio - "Wolf Like Me"
10s: Flying Lotus - Cosmogramma / Deerhunter - "He Would Have Laughed"

50s: Miles Davis - Kind Of Blue / Ella Fitzgerald - "I Love Paris"
60s: The Velvet Underground - The Velvet Underground & Nico / The Kinks - "Waterloo Sunset"
70s: Wire - Pink Flag / Wire - "Mannequin"
80s: The Verlaines - Bird Dog / R.E.M. - "Gardening At Night"
90s: Pavement - Slanted & Enchanted / Pavement - "Fillmore Jive"
00s: Elliott Smith - From A Basement On The Hill / Elliott Smith - "King's Crossing"
10s: Beach House - Teen Dream / Beach House - "Silver Soul"

Thanks!

50's "Kind of Blue"- Miles Davis
"Walk the Line"- Johnny Cash

60's "Revolver"- The Beatles
"A Day in the Life"- The Beatles

70's "London Calling"- The Clash
"Heroes"- David Bowie

80's "The Queen Is Dead"- The Smiths
"There is a Light that Never Goes Out"- The Smiths

90's "OK Computer"- Radiohead
"Bittersweet Symphony"- The Verve

00's "Sound of Silver"- LCD Soundsystem
"All My Friends"- LCD Soundsystem

40s : "Dust Bowl Ballads" (Woddy Guthrie) - "Irene Goodnight" (Leadbelly)
50s : "#4 Je me suis fait tout petit" (Georges Brassens)/Le Gorille (Georges Brassens)
60s : "Abbey Road" (Beatles) / "Dock Of The Bay" (Otis)
70s : "Darkness on the Edge of Town" / "Thunder Road" (Bruce S)
80s : "Nebraska" / "The River" (Springsteen)
90s : "Promenade" (The Divine Comedy)/"Common People" (Pulp)
00s : "Fleet Foxes"/"White Winter Hymnal"

60s Astral Weeks by Van Morrison/Panis Et Circenses by Os Mutantes
70s Blue by Joni Mitchell/Tangled Up in Blues by Bob Dylan
80s Doolittle by Pixies/Teen Age Riot by Sonic Youth
90s If You're Feeling Sinister by Belle & Sebastian/Girls & Boys by Blur
00s Ys by Joanna Newsom/My Girls by Animal Collective
10s Have One on Me by Joanna Newsom/Angela Surf City by The Walkmen

Tough to pick only one... but tracks of this year was the worst: Terrible Love, Good Intentions Paving Company, Cold War and Sprawl II all in a close tie with Angela.

Happy Holidays!

50's A: Miles Davis - Kind Of Blue
50's S: Elmore James - Dust My Broom

60's A: Love - Forever Changes
60's S: Laura Nyro - Timer

70's A: Television - Marquee Moon (sorry, hunky dory...)
70's S: New York Dolls - Frankenstein

80's A: Pixies - Doolittle
80's S: Was (Not Was) - Wheel Me Out (ultra-hip)

90's A: Pixies - Trompe le Monde
90's S: John Ottman - Main theme from "The Usual Suspects"

00's A: Arcade Fire - Funeral
00's S: Trentemöller - Into The Trees (Serenetti Part 3)

50's:
A: The Crickets -- The "Chirping" Crickets
S: The Crickets -- Not Fade Away

60's:
A: Jimi Hendrix -- Are You Experienced?
S: The Temptations -- Ain't Too Proud To Beg

70's:
A: The Clash -- London Calling
S: David Bowie -- Life On Mars?

80's:
A: The Stone Roses -- The Stone Roses
S: Nine Inch Nails -- Head Like A Hole

90's:
A: Radiohead -- OK Computer
S: A Tribe Called Quest -- Scenario

00's:
A: Arcade Fire -- Funeral
S: The Killers -- When You Were Young

10's:
A: Arcade Fire -- The Suburbs
S: Kanye West -- Runaway

30s Song: Robert Johnson - Crossroad Blues
50s Song: Chuck Berry - Johnny B Goode
60s Album: Jimi Hendrix - Are You Experienced, Song: Beach Boys - Good Vibrations
70s Album: Tim Buckley - Starsailor, Song: Patti Smith - Gloria
80s Album: Sonic Youth - Daydream Nation, Song: Michael Jackson - Billie Jean
90s Album: Radiohead - OK Computer, Song: Pulp - Common People
00s Album: Radiohead - Kid A, Song: LCD Soundsystem - All My Friends
10s Album: Janelle Monae - The Archandroid, Song: Robyn - Hang With Me

From 50's onward, data deficient on pre-1950.

50s Album:"Kind of Blue"-Miles Davis
50s Song:"Tutti Fruitti"-Little Richard

60s Album: "Revolver"-Beatles
60s Song: "Satisfaction"-Rolling Stones

70s Album: "Dark Side of the Moon"-Pink Floyd
70s Song: "Bohemian Rhapsody"-Queen*

80s Album: "Joshua Tree"-U2
80s Song: "Sweet Child o' Mine"-Guns n' Roses

90s Album:"OK Computer"-Radiohead*
90s Song: "Smells Like Teen Spirit"-Nirvana

00s Album: "All You Can't Leave Behind"-U2
00s Song: "Beautiful Day"-U2

10s Album: "Valleys of Neptune"-Jimi Hendrix
10s Song: "Fader"-Temper Trap

I know it is kind of cheating to put a posthumous release as my favorite album this year, but to be truthful, nothing really came that close this year. As with the topic starter's style, the * indicates my all-time favorite album and/or song.

60s: Velvet Underground & Nico, Bob Dylan - It's Alright, Ma (I'm Only Bleeding)
70s: Led Zeppelin IV, Bruce Springsteen - Thunder Road
80s: The Smiths - Strangeways, Here We Come, The Sugarcubes - Birthday
90s: Radiohead - OK Computer, Radiohead - Airbag
00s: Arcade Fire - Funeral, Flaming Lips - Fight Test
10s: Arcade Fire - The Suburbs, Surfer Blood - Floating Vibes

50s: The Astaire Story - Fred Astaire; "I Only Have Eyes For You" - The Flamingos
60s: Revolver - The Beatles; "Gimme Shelter" - The Rolling Stones
70s: After the Goldrush - Neil Young; "Life on Mars?" - David Bowie
80s: Purple Rain - Prince and the Revolution; "Ana Ng" - They Might Be Giants
90s: Crooked Rain, Crooked Rain - Pavement; "Hyper-Ballad" - Bjork
00s: Sea Change - Beck; "B.O.B." - OutKast
10s: High Violet - The National; "Tighten Up" - The Black Keys

The one I have the most trouble with is the album for the 2000's. I have quite a number of other contenders, including Funeral, Gimme Fiction, The College Dropout, and Discovery

50's: Kind of Blue by Miles Davis and Johnny B. Goode by Chuck Berry
60's: Pet Sounds by The Beach Boys and A Day in the Life by The Beatles
70's: Exile on Main St. by The Rolling Stones and Born to Run by Bruce Springsteen
80's: Doolittle by Pixies and Love Will Tear Us Apart by Joy Division
90's: In the Aeroplane over the Sea by Neutral Milk Hotel and Smells Like Teen Spirit by Nirvana
00's: Kid A by Radiohead and All My Friends by LCD Soundsystem

I think I'll let a little more time go by before I make a decision for the current decade.

50s: Miles Davis - Kind of Blue & Link Wray - Rumble
60s: The Rolling Stones - Beggars Banquet & Nina Simone - Sinnerman
70s: Neil Young - After the Gold Rush & Neu - Hallogallo
80s: Tom Waits - Swordfishtrombones & U2 - With or Without You
90s: Massive Attack - Mezzanine & Radiohead - Karma Police
00s: Radiohead - In Rainbows & Damien Rice - Eskimo
10s: Beach House - Teen Dream & The National - Terrible Love