you could get a strap and wear your keybaord like one of those 80's keybaord players and strum your spacebar.
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Also, I need to play GH2. Badly.
Too bad I'm busy copying the katakanas to my notebook. Need to get something to do while I have free hours at school.
http://img213.imageshack.us/img213/9905/23328190rw4.jpg
Anyway they're all configurable, it seems.