15. 'Tropic Thunder' (2008)
"Take a step back, and literally FUCK your own FACE!" Hiding under layers of make-up, Cruise did a hilarious supporting turn as craven, hair-trigger studio exec Les Grossman in Ben Stiller's action comedy – a movie powered primarily by the genius energy of its supporting performances. It seems like stunt casting – and it is — but of a particularly brilliant type: Watch the rage in Cruise's face as he screams at the leaders of the Flaming Dragon guerilla group. Watch his cold, dead eyes as he informs Matthew McConaughey's agent that he won't lift a finger to save his stars who have been kidnapped in Asia. This man is committed. It's funny, because it's so damned chilling.