The Sigma 18-50mm F/2.8 zoom lens for Olympus works well with the GH2 and is being sold as part of a package deal in the classifieds by me. If interested, check my ad out.

This lens, for those that know, is next to impossible to find anywhere in the world. This is not an exaggeration, I found this one and another in Australia and they were the only ones available anywhere at any price. I absolutely hate to sell the lens, as I likely will never find another, but I need to finance another videocamera.