David Cook

By Sarah Kickler Kelber After a break, David Cook and David Archuleta duet on Nickelback's "Hero." Hey, maybe they'll both win. I would like to unsee the Guitar Hero commercial featuring David Cook running around in his underwear a la Tom Cruise in Risky Business. At least it wasn't Archuleta.

By Sarah Kickler Kelber David Archuleta won the coin toss a few days ago, and will go second. The final round is contestant's choice. David Cook is singing "The World I Know" by Collective Soul, and David Archuleta goes with "Imagine." Photo by Michael Becker / Fox)