I put greenday, but as far as Alternative goes:
In no real order:
Greenday, SOAD, Sublime, Nirvana, Pearl Jam, Rage Against the Machine, The Cure, Dead Kennedys, Metallica, NERD, The Smiths, Joy Division, Korn, Spiderbait, The Living End and the bets ever... REGURGITATOR all rank very highly...