I like to move it! You know you're watching a Madagascar movie when it opens with this song... It was in the first one, it's in this sequel and I bet it will be in the third one (already in the work, for a 2011 release). Actually, make sure you pay attention to the very beginning when you see the boy sitting on the crescent Moon for the first laugh...
I saw Madagascar: Escape 2 Africa in it's Imax version. No 3D, but still gorgeous to watch. It still has the same look as the first one and stars the same voices for the main characters; Ben Stiller, Chris Rock, David Schwimmer, Jada Pinkett Smith, Sacha Baron Cohen, Cedric the Entertainer and Andy Richter, as well as new characters from Bernie Mac and Alec Baldwin.
The plot revolves around the fact that our heroes, if they can be called that, wants to go back home, in New York (if you don't understand this, see the first movie, then come back). But due to an airplane's "premature landing", they end up in a totally foreign land called Africa. They soon figure out that this place just might be their real home, from all the animals they meet that just happens to be the same species as they are.
I really liked this movie, which was very funny and a worthy sequel. Being in a different environment helped the story to have lots of new elements, while still bringing back a few familiar ones. The psycho penguins are back for more mischief, of course, as are a couple of lemurs... All the returning main characters can be seen in the trailer, if I remember well.
Unlike the last few movies I reviewed, this one is for the whole family, although it is rated PG for "some mild crude humour", so parents should keep that in mind.