Is He The Lead? No. He’s hardly onscreen, but Jack Black’s misanthropic music obsessive downloads every scene from under the nose of supposed-to-be-the-star Jon Cusack.

Skills Acquired: How to be a film star. Black first found success on the comedy circuit with his ranty guitar act Tenacious D.

Fidelity was the first movie role to tap into Black’s innate ability to shout loudly about music. Not coincidentally, it was his breakout role.