If you like classic rock and top 40, you owe it to yourself to check out Q-Unit! One of my favorite driving Cd's, and it's free and legally available! It's Queen songs mixed with the G-Unit album by 50 Cent.
Mirror here:
http://www.coletrain.org/qunit/
Deeelightful.
Oh yeah, and all of the Weird Al Polka's.