I've been using it some this morning, and it turns out the thing is a CPU monster. If you're going to be running a lot of applications without much RAM, look out. It was okay with just Word, iChat, and Mail open.
I have it set on my folder of music videos. Nothing like watching Missy Elliot "Get Hur Freak On" in the middle of an Anglo-Saxon Poetry class. 😀
(I had the sound off, so I could enjoy "Beowulf" at the same time)