I posted this review in the "what movie have you seen (2015)" thread, but as it's a super hero movie ...
Avengers Age of Ultron (2015)
If you like Marvel movies, this one fits in perfectly with your expectations. All the right nods to the original and twists on expectations make for a satisfying blockbuster to kick off the summer movie season. Ultron is one of MCU's better villaiins (okay, not saying much) but James Spader's baddie makes the perfect foil to Robert Downey Jr.'s Stark. Evil Artificial Intelligence might be a tired cinematic theme, but with recent warnings from Elon Musk and Stephen Hawking on the subject, Joss Whedon taps into a timely pop culture fear. There's also a clever nod to 3D printing. Each character in the ensemble gets their moment to shine, with Black Widow and Hawkeye getting much more of their stories filled out (nice reference to The Hurt Locker in the latter's case.) Movie score duties are jointly handled by Bryan Tyler and Danny Elfman, and while it's nice to see him composing comic book hero movies again, made for a somewhat disconnected musical experience, with only Alan Silvestri's Avengers theme to connect the two.
Like FF7, Marvel has a more diverse cast than usual for a big event film--women, Asian-American, African-American, Eastern European characters--and it's about time they take the plunge and make a non-caucasion male leading character movie (Iooking at you, Black Panther and Captain Marvel.) Speaking of which, Age of Ultron continues the MCU larger plot line of infinity stones, but also sets up movies in its more immediate future--the tension between Steve Rogers and Tony Stark is simmering, and Wakanda is finally given an explicit reference. Scarlet Witch and Quicksilver, with different origin stories than that of X-Men, have solid character arcs. Quicksilver doesn't get the scene stealing moment that X-Men: Days of Future Past gave us, but does have one of the best scenes in Age of Ultron. That and the second time Thor's hammer gets picked up (avoiding spoilers here, but you'll know it when you see it. Theater I was in gave standing ovation for it!)
Clocking in at 2 and 1/2 hours, it's paced quickly with action and humor along with bits of character introspection here and there. There's only one post-credit scene this time, so patrons can leave after the first one. Would it have killed Marvel to give us a Spiderman clip at the end welcoming him to the MCU? The opening night crowd's disappointment at this was mocked with someone yelling, "Stop toying with my emotions, Marvel!" But it was all in good fun.