I don't get this... why do they put rock and pop in the same section? Pop sucks, of course I love rock.
Alt. rock (includes grunge).
Classic rock is OK.
Guns N' Roses and Foo Fighters (their older albums) are my favourite.
EDIT: I'll put my bands into categories.
60's: Rolling Stones.
70's: Aerosmith, Rush is okay, Led Zeppelin, U2, Black Sabbath.
80's: Guns N' Roses, Aerosmith, Motley Crue, Van Halen, Judas Priest had some good songs, same for Survivor and Nirvana is okay.
90's: Soundgarden, Nirvana is okay, NIN (Nine Inch Nails) had a few good songs, Guns N' Roses, Foo Fighters, Smashing Pumpkins (only for Zero), The Offspring is pretty good.
00's: Foo Fighters (some good songs), same for Queens of the Stone Ages (3's & 7's, Little Sister, Sick Sick Sick and No One Knows and Go With the Flow are both OK), Billy Talent, The Trews and that's pretty much it.