Punk - Agent Orange, The Clash, The Ramones
Rock - Too general, but since I would take this to be 'Modern Rock' (which is still very general), I'd say Collective Soul, Eve 6, or the Goo Goo Dolls
Rap - LL Cool J, Will Smith (including the Fresh Prince years), Grandmaster Flash, Run-DMC, noticing a bit of a trend here?, Coolio, DMX
Country - Keith Urban, Clint Black, Deana Carter, Sawyer Brown
Christian - again, too broad. I take this as referring to Modern CCM, so I would say none

. If you're talking older CCM, Michael W. Smith or Amy Grant.
Alternative CCM - Skillet, Newsboys
Christian Goth-Industrial (Goth-Industrial the category, not the genre) - Circle Of Dust, Klank, Laing, Mortal
Classic Rock - not quite as broad (Classic Rock is a radio format,

), but Foreigner
Pop - again, very broad. But I'll settle with Richard Marx or Savage Garden (even though Savage Garden is more along the lines of Dance).
Jam - I don't listen to many Jam bands so I can't really say. Spin Doctors and Phish are probably there, though.
Alternative - again, too broad; I'll go with The Pixies, Sonic Youth
Metal - Eek. Another broad category. I'll go with NWOBHM. Def Leppard.
Industrial - Skinny Puppy, Front 242
Industrial Metal - Stabbing Westward, Gravity Kills
Goth Rock - The Cure, Siouxsie and the Banshees, The Sisters Of Mercy, All About Eve, The Mission UK
Goth-Industrial (the genre this time) - The Cruxshadows, Vast, VNV Nation
Alternative Dance - Depeche Mode, New Order, Monaco, The The
Electronic Rock - Econoline Crush, Grand Theft Audio, Garbage
Grunge - Pearl Jam, Soundgarden, Stone Temple Pilots, Alice In Chains
Post-Punk - Comsat Angels, Echo and the Bunnymen