Travis Hallenbeck's website,
Another Unknown Time, is already my favorite WWW spot, and he's barely even posted much stuff yet!! (Though he fiddles things around on his frontpage from day to day if you keep checking back...) The new .MIDs that he's posted are really really simple & great, go listen... I like
Drawbar Organ and classic
robocop (.mid version)..make sure to loop them (in a program like quicktime player) for full effect.