my girlfriend and i had this discussion a while ago and it was quite fun so i thought i would try to make it a game.
add (as in keep the previous ones. maybe we'll end up with a nice play list or something?) a song to each category. they be mentioned on AM so when i say "party killers", i'm not just asking for a horrible song; i'm looking for good music that just isn't suitable to play at a party. to eliminate bias, try to pick songs that you like equally for each category. also, a comment on why would be fun :)
party starter:
oasis - wonderwall
it doesn't get a party started, but it gets everyone singing once things have slowed down a bit :)
party killer:
bjork - pagan poetry
i can picture the look of confusion on peoples faces now.