Lerner appeared in the feature film Envy, as the son of Ben Stiller and Rachel Weisz's characters, and played the son of Wendy Malick and Sam Robards's characters in the ABC-TV pilot My Life With Men, and the son of John Leguizamo and Claire Forlani's characters in an untitled Brett Ratner-directed pilot for CBS-TV. Lerner voiced one of the leads, Chowder, in the computer-animated film Monster House (2006). He was nominated for the 2006 Annie Award for Best Voice Acting in an Animated Feature for his role, and was beaten for the award by Sir Ian McKellen.