(MUSIC) Mr. Doom's recent collaboration with DJ Danger Mouse and the Adult Swim superstars resulted in The Mouse and the Mask, last year's most awesomely absurd CD. I wanna see the enigmatic Doom, rapping behind his metal mask, lead the crowd in chanting "I am sofa king, we Todd Ed." Some "Special Guests" open—let's pray for Meatwad and MC Peepants. (Chop Suey, 1325 E Madison St, 324-8000. 8 pm, $18, all ages.) STEVE MANDICH