The BBC revealed the 'Stadium UK' trailer/ident for their coverage of the Olympic games during the Euro 2012 final last night - if you haven't already seen it, take a look:
Personally I think it's a great concept and one which is executed brilliantly, the 3D animation is incredibly slick and the accompanying track (courtesy of Elbow) really compliments the whole piece making for a really great promotional video.
The sequence was created by a combination of agencies - the concept by RKCR/Y&R and the actual production/animation came from Passion Pictures & Red Bee Media (who also worked on the Wimbledon 'Champion' trails too).
I've been pretty indifferent to the marketing/promotional material for the Olympics so far but this really stood out for me. Great work from all involved.