I've been making commericals for/through xlntads.com, and here are the two I've made so far.
http://www.xlntads.com/creators/view.php?user=goldleaf
The second spot, 'Better Bug', was fun to make, as I learned so much. I bought the model from turbosquid, as I didn't have time to build one, I rendered it with Maxwell Render. The rest of the spot was made with Motion, and Photoshop combined with iShowU. I won Final Cut Studio 2 with my first commercial, and I was excited to use it on this second spot. I recorded the drawings being 'painted' using iShowU, and then animated the camera moves in Motion, and put everything together in Final Cut Pro.