P.D.Q. Bach, "Six Contrary Dances, S. 39: VI. Moving right alongo"
P.D.Q. Bach, the parody composer, makes truly dumb music that can largely only be appreciated by smart people. Or, maybe more accurately, culturally educated people. The truth is, I sort of catch only a subset of the gags in it, because I'm nowhere near knowledgeable enough in Western classical music to get all of it. But even if you don't catch all the jokes, the music itself is pretty fun even without them.
Rocket From The Crypt, "Transcendant Crankiness"
HELL YEAH BUDDY FUCK YEAH WE'RE GONNA GO DOWN TO THE QUARRY AND THROW ROCKS YOU IN MAN
Ocrilim, "Annwn, Part 2"
Rock throwing time is over, I'm sorry. We got busted. As penance for it, you must now listen to fifteen minutes of experimental guitar noodling. I don't make the rules around here.
Eels, "Losing Streak"
OK! I hope you all learned your lesson.
You all skipped it, didn't you? You're just going to have to deal with, like, two experimental metal songs tomorrow now!
Just to make the tagging work, I elected a while ago to just name all the various Foetus incarnations "Foetus" instead of whatever nom de musique Thirlwell used for a particular record. I mention this here because this comes from the compilation record Sink, which in a strange way is actually a various artists collection. But all of the artists are just variations of Foetus. At any rate, this is from the Scraping Foetus Off The Wheel version, which is really the one where the band came into its own, with its deranged noise cabaret thing. The comp has a lot of interesting stuff, so if you like the 80s version of the band, it's a good pickup.