8. Trista "The Lion" Giese

"If I Were the King of the Forest" - Season 6

Before her audition, season 6's Trista Giese claimed that she could impersonate "the Lion" -- that is, the Cowardly Lion from "The Wizard of Oz." But when Seacrest pressed the 22-year-old to show us her talent, her impression came off more as Chewbacca than the Cowardly Lion. Giese performed the Lion's tune from the film, interjecting the character's peculiar roars at every turn -- and warranting one of the most dumb-founded looks from Simon he's ever possessed. And when Giese tried the oft-used "I'm unique" argument, Cowell just continued to stare.

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