Bruce Willis' character John McClane gets a line alongside Boba Fett (cardboard stand-up) in a scene with Kevin Smith in the new film, Live Free or Die Hard (Die Hard 4).
John McClane (Willis): "Nice poster."
The Warlock (Smith): "Oh, what, you like a big fan of the Fett?"
John McClane: "No, was always more of a Star Wars guy."
The Warlock: "Star Wars guy? WHO IS THIS MAN?"
The fourth film is directed by Len Wiseman with a screenplay and story by Mark Bomback, with additional story credit to David Marconi.
The following YouTube clip doesn't include Boba Fett, but it's the same scene:
[Clip no longer available due to a copyright complaint by 20th Century Fox.]
Very special thanks to "BFFC Eric" for calling this in, right after Thursday night's screening, and for "therealmccoy" for additional details.