Audioslave is great, there are a couple of new Buck Cherry songs I enjoy. System of a Down has some excellent music. Green Day is still alive and kicking.
I can't believe I agree with JOSHEEE!

I love rock music, and I cannot stomach rap for more than a minute. While I agree, most free rock radio is getting stale, simple b.c they refuse to play a lot of new artists. I still listen to my local SA station, if only b/c I am familiar with 98% of the music and for local rock news & concerts. The 2% would represent the "new" material.
As for recommendations, this is what I got in my changer in my Stang currently:
1. Godsmack - IV
2. Buckcherry - 15
3. Distrubed - 10,000 Fists
4. System of a Down - Mezmerize
5. Flyleaf - Flyleaf (self-titled)
6. New GNR - Chinese Democracy bootlegs
I can listen to all these albums interchangeably. This year, I have purchased the new Buckcherry, Godsmack, and Flyleaf CDs. Even tho Flyleaf can be considered a christian band, their lyrics are very introspective and every song is worth listening to. The other 5 bands have a well-known following. Worthy mention of Buckcherry's, Disturbed's, and System's albums. Great use of guitars and melodies one each album. the Buckcherry album will take you back to the times of great Party Music.
The new Godsmack album lacks the metal crunch of the previous 3 albums, but is easily a good rock album. Try sampling a couple of their new songs on MySpace.