Here are some breakdown shots of an ad I recently worked on.
The production company was Pank, and it was directed by Pablo Fusco. I take my hat off to those guys, they did an amazing job and helped a lot to achieve the best results.
The main idea of the commercial was to show an alternate world where we still live in paradise. It involved a lot of matte painting on over 30 shots, keying, roto and beauty, etc. Here's the full ad: http://www.youtube.com/watch?v=vje8zgSeEY0
Matte Paintings - Pablo Kou
Compositing - Fabricio Amatto
CGI - Pedro Casavechia / Gonzalo Martin Allende / Nacho Arevalo / Dani Perez
Roto/Prep - Laura Barretto / Cecilia Weindenberg