WiiPhysics is a physics playground for the Wii, much like Crayon Physics or PocketPhysics. It uses Box2D and libwiisprite.

Changes:

+Added pen joint for moving dynamic objects
-You can now “Throw” objects
+Added distinction between objects that are frozen and mobile to make it obvious to the user whats frozen
+Fixed some bugs (Including crash from drawing small boxes)
+Keep objects from jumping when you select them
+Improved intro screen
+increased pen draw size
+started on framework for zoomable worlds

http://wiibrew.org/wiki/WiiPhysics