One of my (extremely glamorous) colleagues has introduced the team to the game Mahjong, and it has caught on like wildfire. Everybody in the team has been playing it repetitively.
I have been pretty obsessed with it lately, playing the game anytime when I have a couple of minutes. It is pretty addictive. The game is freely available to play online. I play mahjong using the following location:
http://www.freegames.ws/games/boardgames/mahjong/mahjong.htm
Below is a photo of the extremely glamorous culprit who has reduced team efficiency 🙂