James Urbaniak, American actor, producer, and screenwriter
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 in the animated series The Venture Bros. (2003–2018), Grant Grunderschmidt in Review (2014–2017) and Arthur Tack in Difficult People (2015–2017).