Rudd plays Mr. Earth in the Sesame Street DVD Being Green. He also appeared as surfing instructor Chuck in Forgetting Sarah Marshall. He also appears in the 40th season of Sesame Street, playing a prince in episode 4212, and presenting "brilliant" as the Word of the Day with Grover in episode 4195.
Among Rudd's other credits are the Broadway shows Three Days of Rain (with Julia Roberts), and William Shakespeare's Twelfth Night (with Helen Hunt), the television series Friends, as well as the films The Object of My Affection (with Alan Alda and Allison Janney), William Shakespeare's Romeo + Juliet (with John Leguizamo), and I Love You, Man (with Jason Segel). In appearances on Late Night with Conan O'Brien, he is well known for his running gag of showing clips from the film Mac and Me rather then his own films.