Jim Carrey is returning to Who-ville and this time Steve Carell is joining him.
Carrey will voice the title character and Steve Carell will voice the Mayor of Who-ville in "Horton Hears A Who," 20th Century Fox's CGI animated adaptation of the Dr. Seuss book, according to Variety.
The "Horton" script was written by Ken Daurio and Cinco Paul, who previously teamed up for such classic films as "The Santa Clause 2" and "Bubble Boy."
Jimmy Hayward and Steve Martino will direct while Theodor (Dr. Seuss) Geisel's widow, Audrey Geisel, will serve as an executive producer.
Carrey, who previously played the Grinch in the live-action "How the Grinch Stole Christmas," will play Horton, the elephant who hears a cry of help from a floating dust speck (what he believes is a tiny planet, home to the city of "Who-ville") and is determined to protect it from the other animals in the jungle who think he's crazy.
It is the second collaboration for Carrey and Carell, who were hysterical rivals in "Bruce Almighty." After Carrey passed on the sequel, Carell took the lead and will star in "Evan Almighty," which will be released next July.
Fox also bought the rights to make the "Horton" sequel, "Horton Hatches an Egg" - though Carrey and Carell have not yet committed to the second film.
"Horton Hears A Who" is slated for release March 14, 2008. -- Shannon Nolley