I was just looking at what you can see that they played in the last week. Here's what they are playing as far as 90s, not including 2000s

2Pac - California Love
Ace Of Base - The Sign
Alanis Morrissette - Hand In My Pocket
Alanis Morrissette - Head Over Feet
Alanis Morrissette - Ironic
Alanis Morrissette - You Oughta Know
Backstreet Boys - I Want It That Way
Backstreet Boys - Quit Playing Games
Bryan Adams - Everything I Do (I Do It For You)
Cardigans - Lovefool
Christina Aguilera - Genie In A Bottle
Coolio - Gangasta's Paradise
Cranberries - Dreams
Cure - Friday I'm In Love
Goo Goo Dolls - Iris
Green Day - Time Of Your Life
Green Day - When I Come Around
Lenny Kravitz - Fly Away
Mariah Carey - Always Be My Baby
Mariah Carey - Can't Let Go
Mariah Carey - Fantasy
Matchbox 20 - 3AM
Michael Jackson - Black Or White
Montell Jordan - This Is How We Do It
Natalie Imbruglia - Torn
Nirvana - Come As You Are
Nirvana - Smells Like Teen Spirit
No Doubt - Don't Speak
No Doubt - Just A Girl
Nsync - I Want You Back
Oasis - Wonderwall
Santana - Smooth
Semisonic - Closing Time
Sheryl Crow - All I Wanna Do
Sixpence None The Richer - Kiss Me
Spice Girls - Wannabe
Spin Doctors - Two Princes
Sublime - Santeria
Technotronic - Pump Up The Jam
Third Eye Blind - Semi-Charmed Life
TLC - No Scrubs
TLC - Waterfalls
Whitney Houston - I Will Always Love You

There's others. Surprised there's no Boyz II Men. Puff Daddy won't get any airplay. He's been heavily banned from the radio because of his behavior. There's actually radio edits of Notorious B.I.G. songs now that edit his verses out.