I am wowed by Map24
Best thing I've seen on the net for a while - Map24 won the 'Technical Achievement' category in the Webby Awards 2004....if you haven't played, then play:
Map24: US version - UK version - Belgian version - German version - Danish version -Dutch version - Finish version - French version - Italian version - Swedish version -
Also, good to see BBC Online getting 3 awards this year...