Jansen had a supporting role in the Disney Channel Original Movie Tiger Cruise, which starred his sister Hayden (this is one of only two productions to date in which both siblings have featured onscreen, the other being The Forger - Jansen lent his voice to Racing Stripes, in which Hayden appeared). He played the voice of Truman X in The X's. He starred as Lucas Malloy in the made-for-television Nickelodeon film The Last Day of Summer, which first showed July 20, 2007 on Nickelodeon. It was released on DVD on August 28, 2007.
