Inside Out, the 15th animated feature film from Pixar Animation Studios, opened this weekend with an estimated $91.1 million in North America, rocketing past Avatar’s $77 million opening to become the best debut for an original movie in Hollywood history. Its setting inside the mind of a 11-year-old girl is arguably the studio’s most conceptually daring to date, not to mention the fact that it is only Pixar’s second film ever with a female protagonist. Its “A” grade from audience polling firm CinemaScore, and the lack of family film competition until Minions opens on July 10, suggests that strong word-of-mouth could make Inside Out one of Pixar’s most successful films ever.