Its important to separate things like "most memorable/talked about" and "most impactful" apart, when these subjects arise! Whille it will become one of the most impactful movies within comic book cinematic genre for sure if not THE most impactful at all! (Only Black Panther can compete with Wondy on that one! Others - not so much! Not even the Justice League!)...With its magical box office run it already became cultural phenomenon at this point and will certainly go down in this history of conic book movies as one of the most impactful things ever if not THE most! Outside comic book genre on more general scale there are more movies, that still will be more impactful to the society than Wondy, but considering it appealed to broader audience than your average usual pop corn flick comic book cinematic experience in the vein of MCU i would say, that even outside comic book movie genre Wondy can become say top-50 of the most impactful movies of all times! But it would still lose to Hollywood juggernauts like Titanic, Perl Harbor, Schindler's List, Forest Gump, A couple of Scorcesse films, a couple of James Cameron films (most recently Avatar!), Star Wars franchise, Star Trek franchise, a couple of Steven Spielberg films, Alien franchise and action testosterone flicks of the past like Terminator, Rambo etc...There will be plenty, that would top Wondy, but i think she is a part of top-50 most impactful movies of all times now for sure! Within comic book genre she is clearly in the top-5 now!! Probably even at the very top! (Some may still prefer Reeve's Superman, some Dark Knight, some would put Logan at the top and someone still think, that Tim Burton's era Batman movies are the best and most impactful comic book movies, despite Nolan's Dark Knight trilogy!) Whatever your pick is Wondy is more than likely in the top-5 now! As for most memorable/talked about! Its veeery unlikely! While it will be ONE of most talked about movies of the year, it won't be THE MoST talked about for sure! The Last Jedi and even Dunkirk will be the ones that will be most talked about! I think it will be between those two! Movies like Logan, Wondy, Justice League, Beauty And The Beast and even Baby Driver are honorable mentions of this year!