Wow, well, I'm too lamely self-repressing to declare these things my "favorite song of all time" when I like them a lot, but these are my last time head-and-shoulders-overplayed-above-the-rest... keeping in mind I don't often listen to songs on their own, in backward chronological order:
Four Tet - "She Moves She"
Massive Attack - "Teardrop" (2nd or 3rd entry, I think)
Caribou - "Sandy"
Blonde Redhead - "23"
Blitzen Trapper - "Sci Fi Kid"
Deerhunter - "Heatherwood"
Slint - "Washer"
Blur - "Tender"
Dandy Warhols - "Holding Me Up"
Stereolab - "Captain Easychord"
Last ones are from the beginning of the summer or so. You're right, it got hard as all hell and I probably missed a few in there.