I don't know if there are any Dream Theater fans on this board, but if so, you have to buy the new release called "Systematic Chaos". Get the Special Edition, which includes a DVD showing them in the studio recording the album.
I used to hate all bands with a keyboard player, but DT's keyboard player (Jordan Rudess) can freaking shred. I'm usually into much heavier stuff (Pantera, Lamb of God, Tool), but the new DT is really growing on me. Petrucci (the guitar player) has won a bunch of fan polls as the best guitar player in Guitar Player magazine, so if you like guitar, they have that as well.
For those of you who haven't heard DT, they are kind of like a mix of Rush and Steve Vai (or Satriani, Malmsteen, or Gilbert).