I count 12 songs that are also in the Rock Band 2 tracklist:

The Allman Brothers Band - Ramblin' Man
Blondie - One Way or Another
Bon Jovi - Livin' on a Prayer
Coldplay - Shiver
Dinosaur Jr. - Feel the Pain
Fleetwood Mac - Go Your Own Way
The Guess Who - American Woman
Jane's Addiction - Mountain Song
Jimmy Eat World - The Middle
Modest Mouse - Float On
Foo Fighters - Everlong
Survivor - Eye of the Tiger

I wonder if I missed any.