Just thought I'd let you all know that I ended up winning the Yahoo! thing! I wanted to thank you all for your support and votes, here is all the detail I have so far:
There will be a photoshoot for print/internet Yahoo! ads, and a different commercial shoot. I could be chosen for one or the other, or both. Both require a separate trip to Hollywood. If I'm chosen for both I get the trip free twice. The photoshoot happens late fall and the commercial probably late January.