"American Idol" winner David Cook - resplendent in tight jeans, T-shirt and plentiful eyeliner - brought down the house with a four-song set that included his celebration song "Time of My Life" and a cover of the Foo Fighters' "My Hero," which he dedicated to his cancer-stricken brother, Adam. Cook returned for an encore and played his guitar-heavy re-engineered version of Michael Jackson's "Billy Jean," reminding his fans that not only had they chosen a talented signer, but also a guy who knew his way around song arrangement".