What type of industry does Jeff Tremaine and Robert Mulligan have in common?
Robert Mulligan Robert Patrick Mulligan (August 23, 1925 – December 20, 2008) was an American film and television director best known as the director of humanistic American dramas, including "To Kill a Mockingbird" (1962), "Summer of '42" (1971), "The Other" (1972), "Same Time, Next Year" (1978) and "The Man in the Moon" (1991). He was also known in the 1960s for his extensive collaborations with producer Alan J. Pakula. He was the elder brother of actor Richard Mulligan.
Robert O'Brien (executive) Robert H. O'Brien (1907–1997) was a businessman and Hollywood executive who was president of Metro-Goldwyn-Mayer during the 1960s. He took over the position in the wake of the debacle of "Mutiny on the Bounty" (1962). Under O'Brien's regime, in partnership with head of producer Robert M. Weitman, MGM produced its last run of classic films, including "Dr Zhivago" (1965), "The Dirty Dozen" (1967) and "" (1968).