Here's a 'showreel' of GH2 hack patches: footage that was shot with all sorts of different experimental hack settings by Nick Driftwood. It will tell you nothing unless you download the original file and compare that to your own, stock GH2 footage. But Driftwood posted a download link on Vimeo to the original, uncompressed footage for us to scrutinize.
These are considered experimental patches and I would not suggest using these on a paid job. You need extremely fast SD cards and they fill up in no time.