Arnold Schwarzenegger in Terminator GenisysTERMINATOR GENISYS

Following some requisite, necessary backstory, Terminator Genisys opens in 2029 Los Angeles, where resistance leader John Connor (Jason Clarke) transports fellow revolutionary Kyle Reese (Jai Courtney) to 1984, where he's to hopefully prevent global apocalypse and protect John's mother Sarah (Emilia Clarke) from a murderous robot (Arnold Schwarzenegger). Upon arriving, however, Kyle finds that Sarah doesn't need saving and the robot isn't murderous, so off they go to 2017, where the planet is still imperiled, and John Connor himself proves to be the source of the planet's eventual ruin. After one of these whisks through the decades, Kyle says, "Time travel makes my head hurt," and time-travel movies generally make my head hurt, too. But for a fifth installment in an increasingly confounding series, this particular time-travel movie is actually a fair bit of fun.

Tom Hiddleston and Chris Hemsworth in Thor: The Dark WorldTHOR: THE DARK WORLD

As the comic-book demigod Loki, the nefarious thorn-in-the-side to the Avengers and adopted brother to Thor, Tom Hiddleston, in the Marvel Studios movies, exudes a teasing, seductive malevolence. With his sharp, angular features and chilling gaze that suggests he might prefer eating you to killing you, he's a wonderfully unstable and hypnotic screen creation. Yet the brilliance in Hiddleston's interpretation is that his Loki is also so damned charming. The character may forever be planning destruction or plotting revenge - specifically against the golden-haired preferred son with the red cape and hammer - but Hiddleston's bearing is so smooth and relaxed, and his wide grin so infectious, that you almost can't help rooting for him, especially because he also, generally, gets his movies' best jokes.