Looks nice! But I can't watch any of the videos because clicking on the play button (in the lightbox) closes the lightbox :-) I'm on Safari 5.1.3 on OS X.
I'm using FireFox 10.0.2 on Windows 7 and nothing loads in the lightbox when I click a video link...just white and empty. The video works fine in Chrome though.
Same here, with FF 10.0.2 on Snow Leopard, when I click on a video I just see an empty box.
I have the same issue on Safari 5.2 on OS X 10.7
Apparently the youtube embed object takes a while to load on Safari, we're looking into it....