Robert Downey Jr.'s quirkiest characters

Harry Lockhart in "Kiss Kiss Bang Bang" (2005)

It’s just about the silliest private eye thriller you’ll ever see. Would-be New York actor Lockhart stumbles into the part of a private eye only to find himself in the middle of a sordid, real-life murder investigation. Forced to take lessons from an actual gumshoe (played by Val Kilmer) in order to make his character more believable, Lockhart gets caught up in a mix of roles: devoted thespian, private dick and guy who’s just trying to impress a girl (Michelle Monaghan). Adding to the controlled chaos, Lockhart's narration interrupts the action, rewinds the film and even stops the drama dead in its tracks to editorialize on the flaws in his own performance.