Guardians of the Galaxy: Vol. 2
The Guardians sequel dives in to Star-Lord's backstory, and we meet his dad, Ego, played by Kurt Russel. Turns out, Ego really sucks. However, the music, plot structure, and character relations are spot on once again. The only downside is that Groot is all grown up.
Thor: Ragnarok
Chris Hemsworth shines as Thor in the third installment of his series. This time around, we see Thor without his long blond hair and he's tasked with saving his home of Asgard from Valkyries. The Incredible Hulk even has a cameo!