James Christian Urbaniak (born September 17, 1963) is an American character actor. He is best known for his roles as Simon Grim in three Hal Hartley films: Henry Fool (1997), Fay Grim (2006) and Ned Rifle (2014), Robert Crumb in American Splendor (2003), Dr. Thaddeus "Rusty" Venture on the animated series The Venture Bros. (2003–2023), Grant...