Nolan Gould: Luke Dunphy from 'Modern Family' is certainly not the sharpest tool in the shed. He is adorable, but in a clumsy way.
Nolan Gould: The actor who portrays him, on the other hand, is a real-life genius.
Ariana Grande: Grande had her break playing Cat Valentine, the airhead drama queen in the Nickelodeon TV series 'Victorious.
Ariana Grande: In real life, Grande has a fierce personality, which shows in her growing involvement in social activism.
Taylor Momsen: Jenny from 'Gossip Girl' is a pretty girl who will do anything to impress her pretty friends.
Taylor Momsen: Momsen, on the other hand, is lead singer of the rock band The Pretty Reckless.
Rooney Mara: Lisbeth Salander from 'The Girl with the Dragon Tattoo' is the survivor of a traumatic childhood who grows into an asocial, rebellious hacker who hates people.
Rooney Mara: Even though Mara is introverted and guarded like her character, the actor has a completely different background.
Brenda Song: In 'The Suite Life of Zack & Cody,' Song plays the ditzy heiress of the Tipton hotel.
Brenda Song: But Song is actually pretty smart. She earned her high school diploma at age 16, and was named an All-American Scholar in the ninth grade.
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