As if the vast array of creative possibilities which the Micro Four Thirds system offers through its adaptable lens capability and HD video options with full manual control, along comes another option:
The pinzonie pinhole lens for Leica M mount – of course you will need to buy the Leica M to MFT adapter to use it.
The Lensbaby can also do pinhole now as well – you may wish to get LensBaby in Nikon F or Canon EOS mount and then get an adapter for MFT.
You now have at least two paths to pinhole photography using the Panasonic GH-1 or Olympus E-P1.
Other resources on pinhole photography:
Given that such pinhole lenses tend to have an f/stop of about f/128, I am guessing with the GH-1’s ability to do 1/2 sec shutter speed HD videos at ISO 100-1600, this may be the 1st ever practical HD pinhole video camera!