Funnyman Jack Black is literally taking on the biggest role of his career in 'Gulliver's Travels,' the upcoming 3D film in which he plays a magazine mailroom clerk who talks his way into writing a piece on the Bermuda Triangle. Naturally, upon arriving, he gets sucked into a secret world -- called Lilliput -- where he's much bigger than the native inhabitants.

'Gulliver's Travels' Trailer

As the titular character, Black looks at ease as he goes for -- wait for it -- big jokes, though the trailer also puts the spotlight on the movie's awesome supporting cast, most notably Jason Segel as a suitor in love with a princess (Emily Blunt) who thinks the Millennium Falcon is actually real.

Check out our exclusive 'Gulliver's Travels' trailer debut, and then see the movie when it opens on Dec. 22.