​From Wikipedia, the free encyclopedia. Ivan Reitman, OC (born October 27, 1946) is a Canadian film producer and director. He is known for the comedies he has directed and produced, especially in the 1980s and 1990s. He is the owner of The Montecito Picture Company, founded in 2000. Description above from the Wikipedia article Ivan Reitman, licensed under CC-BY-SA, full list of contributors on Wikipedia