In 2011 he starred as Richard Peel in the TV series The Event and in 2012 as Howard Friske in the series Easy to Assemble. From 2005 to 2012 Bart had a recurring role as George Williams in the television series Desperate Housewives. He has also had recurring roles in the TV series How I Met Your Mother as Curtis, Episodes as Matt’s Agent, and Revenge as Mason Treadwell. Bart has also starred in the movies The Stepford Wives, The Producers, Hostel: Part II, American Gangster, Harold & Kumar Escape from Guantanamo Bay, Last Vegas, and How to Build a Better Boy. In 2006 he won a Screen Actors Guild Award for Desperate Housewives.