Been into Dream Theater for about three years now, but during the last three months I've started trying to learn Mike Portnoy's drumming, leading me to get an even more thorough appreciation of the tracks.
So yeah, basicly listening to Dream Theater, and only that, right now, just to carve the drums into my head.
Definetely a must-hear band for anyone with an appreciation for complex music
So far I've succeeded (as much as one can without Mike's actual million-gazillion piece drum kit...) in playing through Scene Three: Fatal Tragedy, Scene Four: Beyond This Life and Scene Six: Home
(Although not 100% with the right sounds, as my cymbal setup can't match it, sadly)