You Don't Know Jack is a 2010 American made-for-television biopic written by Adam Mazer and directed by Barry Levinson. It stars Al Pacino, John Goodman, Danny Huston, Susan Sarandon, and Brenda Vaccaro.

James Christian Urbaniak 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 Grunderschmidt on Review (2014–2017), and Arthur Tack on Difficult People (2015–2017).