Glossy/glassy, it's horrible. If you are watching a movie in anything but pitch black conditions, when you cut in between scenes or there are any dark scenes, your reflection shows up. It also happens on a navy blue background webpage or anything like that.
It is highly distracting and you never get used to it.
Please keep in mind that I come from the camp that the new unibodies are actually not any better than the classic macbook pros. I feel that the keyboards feel plasticky/loose/toy-like, and the action on the old keyboards is exceptionally smooth and rewarding. The glass trackpad losing a button actually is not as accurate as the old ones, b/c when you rest your finger on the trackbutton, the trackpad gets confused. The screens are actually a downgrade in my opinion, and for the 15" model, it feels kind of wide even though it's thin. I don't really see any functional reason why they had to increase the footprint of the unibody 15" mbp. On the plus side, the battery life is now better on the unibodies and the contruction is generally more solid.