As it was designed to, "American Idol" has launched some great music careers, including those of superstars Kelly Clarkson, Chris Daughtry and Carrie Underwood. However, when it comes to acting, contestants have had mixed results, from Jennifer Hudson's Oscar-winning performance in "Dreamgirls" to Clalrkson and runner-up Justin Guarini's horrid "From Justin to Kelly" (a film that crashed so badly, it's still regarded as one of the worst movies ever made).

This Friday, "Idol" winner Jordin Sparks makes her feature-film debut in "Sparkle" as an aspiring Motown singer. Will it lead to Oscar gold as it did for Hudson? Considering the film's current Rotten Tomatoes score, it's not likely.

So, in honor of Sparks's role in "Sparkle," let's rank the acting skills of those who've made it to the big screen. (Apologies to Constantine Maroulis, Ruben Studdard and Fantasia, who've proven their acting chops, but only on the stage, TV or DVD.)

categories Movies