Freeze Frame: “Black Panther” (PG-13), “Early Man” (PG), “Film Stars Don’t Die in Liverpool” (R)

Marvel’s superhero “Black Panther” finally gets his proper feature-length movie introduction and it’s a rousing, involving adventure. The fact that most of the folks in front of and behind the camera are black makes it all the more compelling. Chawick Boseman plays the king of a mysterious, highly advanced African nation who must rise to the occasion and save his country, and the world, from a rival cousin, played by Michael B. Jordan. The cast is solid, the story has interesting social implications and Ryan Coogler displays a deft hand as director. While it runs a bit too long for its own good, “Black Panther” is a worthy addition that enriches the Marvel Universe. “Early Man” is the latest stop-motion animated farce from Aardman, the folks behind Wallace and Gromit. It purports to relate the origins of soccer, pitting cavemen against the Bronze Agers. It’s all very silly, but good fun for the little league set. The final days of Oscar-winning actress Gloria Graham provide the background for the low-key drama “Film Stars Don’t Die in Liverpool.” Annette Bening and Jamie Bell star in this story of a May-December romance between Graham and a young and struggling British actor. The…