Collaborative spreadsheet art (using Google docs)
A little out of season, but this is amazing (and very pretty!).
Don’t be fooled though – I’m sure it wasn’t completely spontaneous, and they had a do a little planning before getting stuck in 
May 17 2009 02:44 pm | Creativity and Online tools
Bracket | channelling creativity into collaborative action » Online tools #3: ‘even more’ with Google on 22 Aug 2009 at 7:36 pm #
[...] team members to edit a file, and includes a chat function for real-time communication if they are online together. Files are displayed in the order that they were last edited, not alphabetically, which can get [...]