Shrek, Donkey, Puss In Boots and Fiona are back for another fun-and-pun-filled adventure, and this time they're joined by Captain Hook, Sir Lancelot and ... Justin Timberlake as King Arthur?!

Moviefone has posted the teaser trailer for Shrek the Third in standard and high-definition video.

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CLICK HERE to check out the trailer!

Shrek the Third finds Shrek and Fiona reluctantly reigning over Far, Far Away. But if they can find the heir to the throne and bring him back, they can return to their swamp. While Shrek, Donkey and Puss in Boots are in search of the heir, Fiona holds off a coup d'etat by Prince Charming.

The film arrives in theatres on May 18th, 2007.