This year I was one of the first visitors to the new planetarium at Greenwich Observatory. The planetarium features Europe's first digital planetarium projector. You can have a peak view of the show on their website, although watching a flash movie doesn't really compare to seeing the stars projected onto the ceiling above you.
Our Night Sky Video Map is a poor imitation of the real thing but is quite engaging nonetheless. We have added a few more videos to the map today so it is worth a visit.
Warning: Google still haven't fixed the bug in Google Sky so the map does begin to act very strangely if you zoom in too far. Hopefully they will get around to fixing this soon.