Gus in The Ref Michael McCann in The Thomas Crown Affair Diego in Ice Age Tommy Gavin in Rescue Me "Bill" in "The Sandlot" Denis Colin Leary ' (born August 18, 1957) is an American actor, comedian, writer, and director. He is known for his often biting comedic style and his chain smoking. Leary is the star and co-creator of the television show Rescue Me, which began its sixth season in June 2010..