Tony Mansour and others turned the recently de-fenced square in JJ Bryne Park into a giant
Monopoly board with Park Slope locations filled into the board. 

Most of the squares are restaurants on Fifth Ave, but the "Community Chest" squares are Park Slope/Brooklyn blogs and websites.  Even OTBKB got a square on the final stretch, though the video goes over that square kinda quickly so you have to keep your eyes open for it. 

By late afternoon Sunday, some of the squares got washed away by some water balloon fights, but most of it is still intact.

http://www.flickr.com/photos/wireful/sets/72157604892051756/
pictures above and the video below
http://www.youtube.com/watch?v=GATdIXNCtpA