Macaulay Culkin shares how his Uncle Buck co-star John Candy helped him deal with his "monster father," Kit Culkin. Learn more about the strained relationship between the father and son and who Kit Culkin is.

Emma McIntyre/Getty Images Macaulay Culkin is reflecting on the paternal relationship he had with his late Uncle Buck costar John Candy. Culkin, 45, played Candy's nephew in the hit 1989 comedy and recalls some of his on-set memories in a new documentary,

In the doc, Steve Martin, who starred with Candy in “Planes, Trains and Automobiles” in 1987, shared that the comedian’s abilities were so impressive that it inspired Hughes to write “Uncle Buck” for Candy. Culkin first reflected on being several years older than Candy was when they worked together on the comedy.