Those lucky ducks over at BGR have gotten a nice, long in-person demo of Blackberry's Playbook, and I have to say I'm pretty impressed. The gestures using the bezel are smart, and I like the multi-tasking methods. The sound is off a bit in the video, but it doesn't affect viewing much.
I'd go through all the features I noticed here, but it's better for you to just watch the video when you've got a spare ten minutes. It's not some revolutionary thing, but it's more compelling than I expected, and this combined with Android 3.0 may be actually provide some serious competition for the iPad.