Black Widow's Secret Career, Scarlett Johansson is a Singer with Two Albums

Meet the first ever computer mouse, a wooden box from 1963

Arnold Schwarzenegger's Funny Secret, He and Danny DeVito Invented a Language and Sold 50,000 Copies

Tom Hanks took Wilson home from the Cast Away set, calling it his best co-star.

Will Smith's biggest career regret, passing on The Matrix.

The secret origin of atomic energy, the world's first nuclear reactor was hidden under a stadium.