1) Olympus E-P2 vs. Panasonic GF1 comparison at Neutralday. They posted only the first part of the review so final conclusions will follow soon.
2) Panasonic GH1 vs Olympus E-P2 vs Leica M9 by Steve Huff. Steve recently produced a lot of interesting reviews and comparisons. The Leica M9 wins the challenge but costs also 7 times more than the Panasonic GF1!