80GB of music is out of my league. I'm happy with all the music I own in 25GB. Can't see need for much more. I just wouldn't need it. It's odd how it seems your favorite music will always be what you listened to in high school and college.
Hard to top Jimi. However, nothing passes nighttime slab like "Riders on the Storm" or some Pink Floyd of any nature (post-Syd, for me). Pink Floyd doesn't translate well in daylight for some reason.
Eagles of Death Metal junkie. "Speaking in Tongues" is a gem with the revved-up guitar builds and cymbal-banging. I'll be doing the "Ho!"s and "moomoomoomooo" in my helmet.
http://www.youtube.com/watch?v=8c_gB7H78Pg
Nickleback's "Animals" has been right at the top of the moto-music charts for me ever since someone made that video for motogp.com:
http://www.youtube.com/watch?v=T0DxRNFSzdc