7. The Avengers
Marvel’s Phase One films are, on the whole, enjoyable pieces of entertainment, but Joss Whedon’s The Avengers was when the Marvel Cinematic Universe truly became the Marvel Cinematic Universe. Not only one of the greatest event movies of all time, it also beautifully, dazzlingly,, and unexpectedly delivers on a four year long promise of bringing some of comics’ greatest heroes together on the big screen for the first time ever. For the longest time the whole thing just seemed like an impossible dream, but Whedon and Marvel delivered in the biggest way imaginable, and it’s a finished product that can be rewatched endlessly with enjoyment
Source: Cinema Blend
