The Memorial Day Weekend used to mark the official start of the summer movie season (that is before Spider-Man debuted in early May and broke box office records), and based on the numbers it would appear M-Day is looking to take back those honors. The Hangover 2 premiered to mondo box office returns, all but confirming a third (and probably final) installment in the series. With $86 million over the weekend ($105 million including Friday; $137.4 million including Thursday), the raunchy sequel smashed records (for a live-action comedy).