chrohrs: I've been using a GX1 since December, and it is indeed a fine camera. The camera feels solid, and the IQ and AF are just great. Plus I'm really impressed by the selection of high-quality, small MFT lenses. I like the combo so much that I sold off all my Canon SLR gear.
My only complaint is the inability to stop down during video. Shooting wide open with primes can be challenging because there's so little DoF. In fact, I ended up getting the slower 14-42 power zoom just for video. (More discussion at http://www.fredmiranda.com/forum/topic/1075963.) My guess is that Panasonic could change this with firmware, but they're protecting the GH2.
Still, I really love this camera. Don't let the small size fool you; it's a serious machine.
From the review:"Interestingly, the only method of manual aperture control is found by activating the automated intelligent Auto (iA) mode. By dragging a 'defocus' slider while filming, you can control the depth of field beyond your area of focus."