Team building games for developers

I'm looking for team building activities/games for developers. Ideally, the games would teach (aside of helping to build team relationships and entertaining).

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I know one game that I have played and that 1) is great and 2) helps see why good communication/comments in code helps everybody. The rules are:

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• The team leader / master (call it however you want) chooses a goal that can be achieved developing. It must be an achievable goal within a reasonable amount of time, say, 2 hours. Example: "code a 'Three in a row' game".
• Developers should sit around a table and be able to see clearly the video output of a PC connected to a big monitor/TV
• Each developer get's the keyboard that is connected to the PC for 5 minutes. During that time, he/she can speak out loud whatever he/she wants, and only the developer that is sitting on his/her right side can reply to him/her.
• During those 5 minutes, the developer must try to implement as much of the goal as possible. But there is a catch. If he/she neglects speaking out loud to the rest of the group what he/she is doing, the rest might not be able to follow the code, and scratch it, starting all over again.
• Once the 5 minutes are over, the keyboard is passed to the person that is sitting on the right.
• The end of the game is reached if 1) time is up or 2) the goal is achieved.

So, this game helps the developers understand the importance of communication.

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Do you know any other games of this type?