I have a Go Pro Hero, too. Love it. Easy to work, unlimited mounting points, not too awfully expensive.
BTW, Jimmy Anderson went down @ GIR in T7 last week, mounted on the tank. He took a NASTY spill, which cart-wheeled the bike a bunch of times. The camera popped off (so did he, his fairings, etc.) and still recorded. Tough little camera, and caught the whole thing perfectly.
I'll try to get it from him and post it up in a link.
P.S. If you contact Jerry Davidson at WFO Motorsports, he sells them at a discount to licensed racers. www.wfo-motorsports.com