Zach Galifianakis for Shrek spinoff

Hangover star Zach Galifianakis to fall off a wall in Puss In Voice

Hangover star Zach Galifianakis has joined the cast of Shrek spinoff Puss In Boots.

Galifianakis will voice the character Humpty Dumpty in the movie.

Antonio Banderas and Salma Hayek have previously been confirmed for the project, which will act as a prequel to the Shrek franchise.

The film is scheduled for release in November 2011.