10. Amy Adams, ''Rescue Me'' (season 3)
While she's best remembered for her fuchsia hair and bubbly personality, tenth-place contestant Amy Adams had a serious set of pipes and a little bit of sex appeal too, both of which were on full display in her flirtatious, spot-on rendition of ''Rescue Me.'' Hey, anyone who can make Simon blush on their first meeting has earned a spot on this countdown.

Amy Adams' audition: Watch it on YouTube