Oh, God; as a movie fanatic, I could go on forever... (these are in no particular order, by the way)
Spider-Man 2 (2004): What is perhaps my most favorite movie of all time and undoubtedly my most favorite superhero film, I loved this movie dearly as a kid and still love it dearly today. There was great action that was never cut away from and was superbly compelling, VFX which at times looked completely real, and very gripping interactions between characters as well as the struggle of Peter Parker attempting to balance his regular life with his life as Spider-Man. If you are into superhero films but have not watched this one, go watch it now.
Star Wars - The Force Awakens (2015): Heh heh; this should be kind of obvious, given my profile... No, I don't love this movie just because it was so highly hyped back from when it was first announced. It really was a breath of fresh air despite its similarities to 'Episode IV', especially after the atrocities that were the prequel films (save for 'Episode III'... That one wasn't entirely bad). Amazing practical and computerized VFX, intriguing characters of different sorts, and a very three-dimensional villain who was not your typical "I'm a trained badass who spends most of my time monologuing and shit" villain. He was extremely persistent with what he was after and didn't waste time with getting stuff done, but he was also kind of inept with the ways of the Force and was very unstable, making him to be the most innovative villain ever put to film for a very long time.
Captain America - The Winter Soldier (2014): So, the first movie was decent. But damn, did Cap kick a lot of ass in this one. Cool plot and character interactions, but I just can't help to make the fight scenes the core highlight of this movie; they were well-choreographed through and through, and also felt totally brutal. I'm a sucker for a good fight scene... You show me one that's really good, and I'm pulled in.
Malcolm X (1992): A film that I very recently watched, this film chronicles the struggle of the real-life person of the same name as he goes from being a crook to an activist for the rights of black people. It's moving, it's tense, and it's a good watch in spite of its length.
Cloverfield (2008): This... Oh my God. This was a monster movie that had me shitting my pants from the moment things got kickstarted. The first movie to start the found-footage craze which follows the exploits of a group of people attempting to survive a night in New York City when a giant-ass monster attacks out of nowhere, this'll give you plenty of chills and make you feel like you're right there within the action and terror... You know. Provided that you can deal with the shakiness of the camera and stuff.
Deadpool (2016): Need I say more? After the absolute disaster that 20th Century Fox pulled with 'X-Men Origins: Wolverine', they managed to fix the lovable Merc With A Mouth and give him a comic-book adaptation that was very faithful, packing plenty of over-the-top humour and violence. Wait, what? Plenty of fourth wall breaking, too? I have no idea what you're talking about... There isn't even a fourth wall in that movie to begin with.
Freddy vs. Jason (2004): Yes, I'm aware that this movie was not particularly well-received amongst critics. But when two of the world's most famous horror movie serial killers are pitted up against each other in a crossover of epic proportions... there was just no way I couldn't love this movie when I was younger, and not love it even today. Oh, right; I'm also still waiting on a sequel.
Star Wars Episode V - The Empire Strikes Back (1980): My favorite 'Star Wars' movie in the Original Trilogy. The practical effects were so much better than most of the poor excuses for CGI effects that are put to film today, the dueling felt realistic and the plot was very entertaining... Most of us also are aware of that famous plot twist which is hard not to come across even if you're not a fan of the movies, and is of course still well-recognized for how damn surprising it was to everyone finding it out for the first time.
The Dark Knight (2008): The superhero movie which almost absolutely revolutionized the theme for most other superhero movies following, this was a superhero film that was grounded in realism and gave off a very gritty kind of feel that had once been untouched territory until this movie's release. In a good way, it was absolutely nerve-racking, and Heath Ledger's performance as the Joker is undeniably the second best behind Mark Hamill's flawless voice work behind that same character.
Kung Fu Panda (2008): My most favorite animated movie, hands down. For a kids' movie, the plot is surprisingly deep, the character relationships are also very heartfelt and believable, and the fight scenes were very well animated. Not to mention all the genuinely hilarious humour involved. It's fun for the whole family.
And those are all the ones I can think of right now.