Jango's Bongo said:

I agree with everybody's points here... except possibly my own.

Oh hey now, I've got a question which is on-topic. Remember those matte boxes around tie fighters which can be seen when they pass over a star destroyer (for example) that Ady's doing his best to remove - how is that done? Because if the tie's box is just rotoscoped out and the clean tie placed back on the star destroyer then the box will still be there, right? So is the shot left unrotoscoperized and the area on the star destroyer altered or what?

Hmm, yeah I'm pretty sure that question didn't make sense but I'm too feeble minded to try to rephrase it. If anyone actually understood it then my hat is raised to you and if you not only understood it but can answer it then by gosh I'll shake your hand too.

I'm pretty sure that as well as rotoing out the foreground element in question (in this case the Tie Fighter without the black box), a clean background plate/element is created so that doesn't have the box on it either. This might be done by combining different frames - if the box doesn't remain in the same place through all the frames, then that means you can create a 'boxless' complete SD by combining sections from different frames, either via split screen effects or similar in Aftereffects or by using Photoshop.