The 90's was by far my favorite decade for music. More than half of all the songs that stick to my mind are from the 90's although they're not necessarily alternative. Certainly, a lot of the songs I post in the "What Music Are You Listening To?" thread are from the 90's.
Narrow it down a bit to the mid 90's.....
Goo Goo Dolls
Toad The Wet Sprocket
Sublime
Tonic
Third Eye Blind
Live
Seven Mary Three
Hootie And The Blowfish
Marcy Playground
Sarah Mclachlan
Natalie Merchant
Shania Twain (wife's favorite)
Collective Soul
Bush
I listened to harder stuff like NIN, Anthrax, etc. But, they don't really stick to the mind. Same goes for hiphop. They don't stick either.
Other 90's.....
Alice In Chains
The Black Crowes
Bruce Hornsby
Counting Crows
Gin Blossoms
Joe Satriani
Tom Petty
Smashing Pumpkins
The soccer players I scrimmage with got me hooked to goa trance:
Hallucinogen
Infected Mushroom
Deedrah
plus a host of goa trance artists
There are probably many "one-hit wonders" that I missed.....