Everyone hates the goodness in this thread, so how about some friggin weirdness.
Faith No More, amazing, had one hit single but noone paid much attention. The real awesome came on their next album. These guys were nuts live, check this shit out just weird 90s rock/metal/weird shit. Also, some might recognize (Big) Jim Martin from his cameo in Bill and Ted
Audio and video not quite synced up, but the performance is amazing. Mike Patton (vocals) does a lot of voice acting work in games these days, as he can do crazy shit with his voice.
This ones a bit nicer on the ears, but still fun I mean come on, "Everything's Ruined"
Have some hilarity! The gay keyboardist wrote a song about sucking dick to embarass the straight singer. What happened? It became their most popular song at live shows because of how hilarious he found it.
Also honorable mention, just for the line @4:00 that always cracks me up when I hear it!
http://www.youtube.com/watch?feature=player_detailpage&v=tiyA5DmiHD0#t=240s