OLPC is hosting a Physics Game Jam in Boston August 29 - 31. This is a team based rapid game development competition based on creating a physics game for OLPC XO laptops in 48 hours. Remote entries are allowed, and there will be prizes for the winners. There will be programming workshops such as developing in Sugar, using PyBox2D, and integrating computer vision with physics, so prior experience is not a requirement. There is more information on the OLPC Wiki: http://wiki.laptop.org/go/Physics_Jam Registration is free, but donations are encouraged: http://olpcphysics.eventbrite.com/