This one just keeps getting better and better. First, photos were posted of Android 3.0 Honeycomb booting on the Nook Color, then the developer posted a video of Honeycomb booting, and now a new video has surfaced that shows Honeycomb in much more action on his, erm, "e-reader."
Since the first video, dev deeper-blue now has graphics acceleration "more or less working." While still an early build with laggy touchscreen response, he obviously has gotten a lot working in the mere four days since the SDK preview was released! [xda-developers]