Tonight I've been playing around with Europeana, the new database of digitized cultural media for Europe. Last month Europeana went public to an enormous response... so much that the site crashed and had to be shut down for a reworking. Apparently they've been back up since Tuesday, though they never bothered to send me an email notification and I only happened across it today.
A significant increase in server capacity will hopefully solve previous problems, although the project commission warns that user experience may be less than ideal as they test and tweak. The "My Europeana" function will likely be helpful, but registration is not enabled at this time.
Have fun exploring, and let me know if you find anything interesting!