On The Incredible Burt Wonderstone, I got involved in post production as a compositor for the TV screen replacement shots.

Using Nuke to do the composites, on some of the shots I needed to also replace the channel number so it could change in the shot.

I also needed to rebuild the news content for 4:3 aspect since the original content was in wide screen 16:9 aspect.

In the smoke covered stage shots I ended up using Mocha Pro to track the shots.  It gave me better results using it's planer tracker.  I then brought the tracking information into Nuke for the final composites.