Kurt Cobain at his very best:
http://www.youtube.com/watch?v=4xHl-P_arVA

http://www.youtube.com/watch?v=uRtd9TFfScU

Pretty much anything by Me First and the Gimme Gimmes, though Israel Kamakawiwo'Ole does the best version:
http://www.youtube.com/watch?v=Ymx8bHBigek

http://www.youtube.com/watch?v=0ltAGuuru7Q

http://www.youtube.com/watch?v=uMrZ7lChK-g

I could go on all damn day here. I'll post some more after another couple of beers.