Daniel Leiner (May 13, 1961 – October 18, 2018) was an American film and former television director. He was best known for directing the stoner comedy films Dude, Where's My Car? and Harold & Kumar Go to White Castle. He was born in Manhattan, New York in 1961. Leiner also directed a wide range of television shows including Arrested Development, Everwood, Gilmore Girls, Freaks and Geeks, Sports Night, Felicity, Action, The Tick, Austin Stories, The Mind of the Married Man, The Sopranos, and How to Make It in America. He also directed The Office episode "WUPHF.com".