Jack Black and Casey AbramsThroughout his time on 'American Idol' this season, Casey Abrams was always memorable and always a little ... unique.

With his quirky sense of humor and no-holds-barred attitude on stage, there was really only one performer that could match him in personality and stage presence.

A lot of people don't realize that Jack Black first came into the public eye as one half of musical duo Tenacious D. The pair tackled Queen's 'Fat Bottomed Girls,' and it was as silly and fun as you'd expect.