Madagascar
http://www.imdb.com/title/tt0351283/
Plot Summary: At New York's Central Park Zoo, a lion (Stiller), a zebra (Rock), a giraffe (Schwimmer), and a hippo (Smith) are best friends and stars of the show. But when one of the animals goes missing from their cage, the other three break free to look for him, only to find themselves reunited ... on a ship en route to the island of Madagascar. When their vessel capsizes off the coast, however, the friends, who have all been raised in captivity, learn first-hand what life can be like in the wild.
Credited cast:
Ben Stiller .... Alex the Lion (voice)
Chris Rock .... Marty the Zebra (voice)
David Schwimmer .... Melman the Giraffe (voice)
Jada Pinkett Smith .... Gloria the Hippo (voice)
rest of cast listed alphabetically:
Sacha Baron Cohen .... Julian (voice)
Cedric the Entertainer .... Maurice (voice)
Christopher Knights .... Private
Andy Richter .... Mort (voice)
So far I've heard great reviews. We'll probably see this over the weekend.
Besides....Chris Rock! Fo sho.