http://www.phyxware.com/NI_Keyer_02.html

Keying has never been so easy in Final Cut Pro, Motion and AE.

Highly optimized award-winning tools to create seamless and realistic composites in FCP, Motion and AE. Repair uneven green/blue screens, create and manipulate mattes, neutralize green/blue spill, and match background color and edge lighting. PHYX Keyer 2.0 is GPU accelerated for speed increases
of up to 300%!

FxFactory powers hundreds Final Cut, Motion and After Effects plugins:
http://www.noiseindustries.com/fxfactory/