Jim Carrey and Carol Burnett in Horton Hears a Who! (2008)

Jesse McCartney in Horton Hears a Who! (2008)

Will Arnett in Horton Hears a Who! (2008)

Steve Carell and Isla Fisher in Horton Hears a Who! (2008)

Steve Carell in Horton Hears a Who! (2008)

Jim Carrey and Seth Rogen in Horton Hears a Who! (2008)

Steve Carell and Amy Poehler in Horton Hears a Who! (2008)

Steve Carell and Jesse McCartney in Horton Hears a Who! (2008)

Jim Carrey, Joey King, Jonah Hill, and Laura Ortiz in Horton Hears a Who! (2008)

Joe Pasquale in Horton Hears a Who! (2008)

Jim Carrey, Marshall Efron, and Seth Rogen in Horton Hears a Who! (2008)

Jim Carrey, Joey King, and Jonah Hill in Horton Hears a Who! (2008)

Jim Carrey, Colleen O'Shaughnessey, Joey King, Jonah Hill, and Laura Ortiz in Horton Hears a Who! (2008)

Amy Poehler in Horton Hears a Who! (2008)

Shelby Adamowsky in Horton Hears a Who! (2008)

Jim Carrey, Carol Burnett, and Josh Flitter in Horton Hears a Who! (2008)

Steve Martino in Horton Hears a Who! (2008)

Jimmy Hayward in Horton Hears a Who! (2008)

Jim Carrey, Will Arnett, and Seth Rogen in Horton Hears a Who! (2008)

Jim Carrey and Steve Carell in Horton Hears a Who! (2008)

Jim Carrey, Carol Burnett, Will Arnett, Steve Carell, Marshall Efron, Tim Nordquist, and Seth Rogen in Horton Hears a Who! (2008)

Marshall Efron, Dan Fogler, and Tim Nordquist in Horton Hears a Who! (2008)

Dan Fogler and Tim Nordquist in Horton Hears a Who! (2008)