Video: Diana DeGarmo - Audition

Simon Cowell may have just rendered the biggest judgment call of his career with his decision to bid farewell to American Idol . But what is his real legacy as a talent spotter? Before he calls in his manservants to ship his tight black shirts over to The X Factor , we decided to take a look back at Simon's best — and worst — judgments on Idol . No question, he possesses keen insight. But maybe there's also a reason the final voting is left up to America. [...]