I just learned about them recently. Here's something (you may already know about this), but there's a web site called 'lastfm'. You go to their 'radio', then enter a band name. It plays that band, then other bands that are similar. I've learned about a lot of good bands that way lately. Enter 'Dream Theatre', and see what you get (some of the stuff can be dated, if the band's been around awhile, that's the only realy caveat)

Have fun

I wish I'd said that.. The Staircase Wit

anahl nathrak uth vas betude doth yel dyenvey..;)