Familiar faces and new characters collide in this clip from "Night at the Museum: Secret of the Tomb," premiering today exclusively on Moviefone.

Night at the Museum: Secret of the Tomb - Clip No. 1

The scene features Teddy Roosevelt (Robin Williams) and Larry (Ben Stiller) meeting Sir Lancelot (Dan Stevens) for the first time. After the trio make their initial introductions, Lancelot tells Larry he looks familiar -- but not because he resembles a fellow knight of the Round Table. Rather, Larry reminds Lancelot of Camelot's fool; the only thing he's missing is the signature hat.

Check out the clip below, which should be a good indication of the type of humor audiences can expect from the flick, the third (and final) in the "Night at the Museum" franchise.

"Night at the Museum: Secret of the Tomb" hits theaters on December 19.

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Night at the Museum: Secret of the Tomb
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