http://fxfactory.com/fxfactorypro/
Reveals the destination clip by folding the source to one corner, or by unfolding the destination clip over the entire frame.
http://fxfactory.com/misc/FxFactoryHelp/pluginguide/transitions/origamisquare/index.html
FxFactory is a revolutionary visual effects architecture powering hundreds of plug-ins for Final Cut Pro, Motion, Final Cut Express and Adobe After Effects:
http://fxfactory.com/fxfactory/