If there's one thing I respect in this fallen world anymore, it's commitment to a bit. Jim's Music Dungeon on YouTube is Knee Deep in the Bit, having taken hundreds of classic metal songs and made them sound like Doom level music—and he isn't slowing down.
His Doom midi cover of Schism by Tool definitely has my favorite image gag of the lot, with a godmode Doomguy superimposed over Lateralus' signature psychedelic cover art of a skinless muscle dude just chilling out. Also, the long runtime and repeated prog riffs make this one feel particularly well-suited for in-game use.
