I promised a few weeks ago that I'd sound the alert when this happened: The Panasonic GF1 and 20mm ƒ/1.7 lens combo is back in stock at Amazon. For list price, no premium.
I made the mistake of trying to shoot mine at ISO 1600 in a dimly-lit interior at a Christmas party not long ago. May I just say, "Oops"? But in general I'm really enjoying it. It is if nothing else a whole lotta fun to shoot with.