sentences:  Gilchrist's first significant television role was that of Josh McKellar on Fox's short-lived television sitcom "The Winner", which aired in 2007.From 2009 until its ending in 2011, Gilchrist co-starred as Marshall Gregson, the son of the lead character portrayed by Toni Collette, on the Showtime comedy-drama series "United States of Tara".In 2009, Gilchrist won the lead role of Craig Gilner in the film "It's Kind of a Funny Story", which premiered at the Sundance Film Festival in January 2010.