Hi. I'm a FCP novice. I want to enter the Colbert "McCain Challenge" where a greenscreened version of McCain is placed in "interesting" situations. Somebody made this youtube video: http://www.youtube.com/watch?v=8G9jA-FGGd8 Where they took his head and mapped it over the body of one of the performers. I want to do the same thing for another music video. I've already chroma keyed and cropped til I have just his upper body (still need to crop down to the head) but what I don't know how to do is map it to the head of one of the performers the way the other guy did. I don't even know what that technique is called so I can't do any research on my own. Any info that might point me in the right direction would be greatly appreciated. Thanks!