Just a little bit confused?!?!

Everyone that appeared is listed on this site. However, some names that I saw I don't remember seeing on the broadcast. The one I really wanted to see was David Cook, I figured he would be performing or some sort, but I never saw him?!?! Tony Hawk, Meiki Pheifer (sp?!?!) just to name a couple others. Are they going to be showing another broadcast of it with the people I didn't see, I"m sure I'm not the only one?!?! Unless David had a conflict with the whole AI tour coming to an end, but I think he really wanted to be a part of it.