Celebrating April 1st

This year's April 1st celebrations weren't as good as last year's.

Google introduced TiSP, which had its moments (especially the 'file not found' page, which took an amusing stab at a certain class of physicists). Google.uk introduced GMail Motion. (This does remind me, though, that Google announced GMail for real on a previous April 1st.) Do any of you know whether Google did anything in other countries?

Tor introduced new fantasy game, and I gave a talk on "Synchronization of Cows" (several people needed to be assured that that is in fact real).

(Tip of the cap to Puck Rombach and Justin Howell.)

Update (4/2/11): CNN.com has an article with some pranking highlights of April 1st.