As hard as it is for many of them to admit, most American Idol winners peak the minute they win the show. With a few very notable exceptions, their fame begins dwindling the minute the janitors start wiping up the confetti in the studio. We all remember Kelly Clarkson and Carrie Underwood from the early seasons, but somewhere around season five it gets a little fuzzy. Most people have stored David Cook in the fuzzy part of their brains. He's from season seven, when he beat David Archuleta, best remembered as the little Mormon kid with the crazy dad. Cook was like a one-man Nickelback, and a small but devoted cult formed around him. The cult wasn't big enough to prevent him from being dropped by RCA, but it was enough to get him high on this list. He has a new album out this year.