7. Kellie Pickler, Season 5
How Far Did She Go: Fifth place
Most Memorable Performance: Patsy Cline's "Walkin' After Midnight"
Biggest Hit: "Best Day of Your Life" from her self-titled second album, as certified platinum and peaked at Number 46 on the Hot 100 charts. Taylor Swift co-wrote the track.
Career: The daffy country sweetheart who made you smile, she was part of the wacky season 5 that produced Taylor Hicks as the champion, one of Idol's best — and weirdest — seasons. Post-show, Pickler released four albums, including her debut Small Town Girl which has sold over 900,000 copies to date. She toured with Swift in 2009 and also won Season 16 of Dancing With the Stars in 2016.