Vitaliy has hacked the GH2, different frame rates and resolutions. But it's essentially beta phase, unless you're a tester or developer, best to wait for the pg-13 version.
This is a pretty big deal actually.
I scoff at the puny Canon DSLR's.
There about dew for a new product to be released sometime in the near future and it will be interesting to see if they can top Panasonic.
Canon? : We Panny People will crush our enemies, see them driven before you, and to hear the lamentation of their women.
http://www.youtube.com/watch?v=V30tyaXv6EI