The following year, he contributed a character voice to the animal cast of the film "Dr. Dolittle 2." He had a hit with the 2002 release "Big Fat Liar," which teamed him with teen actress Amanda Bynes as a pair of students seeking revenge on a sleazy movie producer (played by Paul Giamatti). Muniz was also part of the ensemble for the gang film "Deuces Wild," released that same year. In 2003, he made a cameo appearance as Cher's underage boyfriend in "Stuck on You." That same year, he appeared in the series premiere of Ashton Kutcher's MTV practical joke series "Punk'd."