I'm a new film maker and i was wondering how does one intergrate CG objects in a film. Like in the Matrix with the bullet time and in xmen with night crawler. What i want to do is put floating numbers in a scene. I'm not sure about how to explain it but a good example would be http://www.triggerstreet.com/gbase/Trigger/WatchFilm?file=qtdemand/100731/fgio-low.mov&width=160&height=136&mediaType=QuickTime&mode=commercial&oid=296926
The way teh cameras \interact with the film footage.

Dude! What's the name of the movie?

- C. Davis
YELLOW HAMMER PRODUCTIONS

when you take multiple sources of video and combine them, it's called compositing. The most popular app for that is After effects.

thanks for the help guys. I appreciate it.