Actors lend voices to CGI ‘Horton’

Burnett, Rogen, Arnett, Fisher join cast

Who-ville is getting more crowded.

A batch of thesps have joined the voice cast of CGI toon “Horton Hears a Who,” starring Jim Carrey and Steve Carell.

Carol Burnett, Seth Rogen, Will Arnett, Isla Fisher, Dan Fogler, Amy Poehler, Dane Cook, Jaime Pressly and Jonah Hill will voice roles in laffer based on the Dr. Seuss book.

20th Century Fox Animation will release the comedy, produced by “Ice Age” makers Blue Sky Studios, on March 14, 2008. Scribes Cinco Paul and Ken Daurio adapted the classic Dr. Suess story for the bigscreen.

Burnett will voice the role of the always skeptical Kangaroo. As previously announced, Carrey will voice the title character, while Carell will voice the role of the Mayor of Who-ville.