Yeah, I know most rock songs are riff-driven but I am talking about songs where the guitars carry the song to the point that the rest of the band could stop and you may not notice.

The song that sparked this is "Speed Parade" by Slash's Snakepit.
http://www.youtube.com/watch?v=56fYzW_c_JI

Other I can think of now are "Outshined" by Soundgarden and "Slither" by Velvet Revolver.