He may be getting rave reviews for his latest performance in The Informant!, but Matt Damon’s favorite role is being a dad. “That’s an impossible question to answer, because I couldn’t limit it to just one thing!” the actor told In Touch when asked about his favorite part of fatherhood at the History Channel premiere of The People Speak in New York on November 19. Formerly a coveted bachelor, Matt now has daughters Isabella, 3, and Gia, 15 months, and is also a stepfather to Luciana’s older child, Alexia. “I never knew I could function this well with no sleep!” the star laughed of caring for three girls. Matt added that he, Luciana, and their brood are heading to Florida to spend a sunny Thanksgiving.