Finally decided to listen to "Nuthin' But Nineties" for awhile this morning, and it's been mostly standard-issue KFOG playlist staples from that decade. Nirvana, DMB, Sheryl Crow, U2, Lemonheads, Counting Crows, Fastball, the Foos... with the very occasional only-played-on-10@10 nugget like Jamiroquai or the Beasties thrown in for spice.
In other words, any Foghead who says "OMG! I haven't heard this song in ages" this weekend hasn't been paying attention. Didn't see any complimentary comments about this gimmick on the KFOG FB page.