Robin Williams says making Happy Feet Two 'crazy fun'

Video caption, Happy Feet Two

Happy Feet Two star Robin Williams talks about why making the animated sequel was "so much fun"...

The movie sees a new threat to penguin Mumble and his family and friends' home - and it takes everyone working together to put things right.

Elijah Wood (the voice of Mumble) reveals who his favourite characters are in the flick.

And Robin Williams tells us what he likes about his character, Ramon...

Film footage courtesy of Warner Bros.