A keying tool : Ultra 2

You all can see its power on the website here.
The following is excerpted from http://www.seriousmagic.com/.

"Revolutionary Keying Technology
Serious Magic's ULTRA 2 is a breakthrough that transforms keying into a practical daily production tool for all types of video professionals. ULTRA 2's drag-and-drop simplicity allows video editors to create highly realistic background composites that are convincing in every detail, even from marginal video sources.
ULTRA 2's Vector Keying™ technology blows away the primitive keyer built into your video editing software. Now shots that used to be impossible to key—uneven lighting, wrinkled backgrounds and frizzy hair—can be finished in minutes. ULTRA 2 will even preserve the shadows of your talent and achieve complex keys such as smoke, liquids and transparent objects with minimal effort. It's simply remarkable.
Virtual Set Technology
ULTRA 2 puts high-end virtual sets within reach. ULTRA 2's Master Sets Libraries (sold separately) go beyond typical static shots and include breathtaking flying camera shots, moving stages, boom and dolly moves. Sets include multiple B-source options and camera angles in tight, medium and wide views. These libraries, sold separately, can be used seamlessly in ULTRA 2. "

Now, because the great improve of digital technique, we can have more flexibility in our creation. Although the price $495.00 is cheaper then other solutions in keying, I can't afford now. Maybe I will purchase one later.