Looks good...but the transitions and audio were extremely choppy for me (high speed connection and fully-loaded Mac). If no on else has had this issue, my guess is it might be something with Firefox. If so, that's something they're going to need to take care of!
Otherwise, I think that it is visually quite nice...
EDIT: As an FYI, it's not Firefox...the issues are still present when visiting in Safari. Hopefully they'll fix these glitches soon.