It can be painful if you do motions that twist your muscles or stretch them out. It's why just tapping keys can lead to carpel tunnel. Your fingers are supposed to move more.
As with the Wiimote, you're supposed to actually use the muscles in your arms, not just flail your wrist around.
A flashy-first game is awesome when it comes out. A great-first game is awesome forever.
Plus, just for the hell of it: Kelly Brook at the 2008 BAFTAs








