Here's a nice little video wrap-up of 2011 from the splendid people at Visualizing.org, providing a quick look through the year's events using their visualisation contests and uploaded visualisation projects to tell the story...

You can navigate through a gallery of all the projects displayed in the video here.
Honoured to be a judge and speaker at Malofiej 20
The worst visualisation I've seen this year? Google Zeitgeist 2011