[citation][nom]D_Kuhn[/nom]Any drummers on the board? Would a game like this do ANYTHING toward learning to play the drums? From a non-drummer it looks to me like drumming on these games is a lot closer to the real thing than the "guitars" are.[/citation]
I'm a drummer, and the answer is yes and no. It isn't horrible, but it skips over any fundamentals required to be a good drummer. It makes you good at hitting things fast and without much control, but not any solid stick control (you should be using your fingers much much more then your arms/wrist, and you shouldn't have to hit the drums hard to be able to hit them fast) and basic drumming rhythms and styles (such as the paradiddle, flams, swiss army triplets, rim shots, high hat control, proper builds, creativity, etc).
In short it does more then a guitar hero guitar does for a normal guitarist, but by no streach of the imagination does it make you a good drummer.