Just bought the Tokina 80-200 push-pull I was talking about, and also a Yashica 28mm f/2.8, I don't have adapters right now and I'm selling my camera so I might not get to try them until I get the GH2, but damn they look like nice lenses. I tried the tokina on a Canon AE-1 and it's really nice, it's gonna be a nice super-tele on a crop.
The Yashica seems awesome too, super solid metal lens, feels bombproof (like most older lenses) I've seen some amazing test shots and the focal range is very nice. Now all I need is a Pentax 50 1.4 and I'm set!
For 100$ total, I'm pretty happy with those 2 lenses.