One Christmas in Camelot, the revels were interrupted by a hulking, emerald-skinned knight (Ralph Ineson), who dared anyone present to lay a blow on him... as long as he got to strike back a year later. The king's impetuous nephew Gawain (Dev Patel) met the challenge-and after the intruder improbably survived, faced a fateful journey to meet his end of the bargain. David Lowery's stylish, subversive take on the Arthurian tale co-stars Alicia Vikander, Joel Edgerton, Sean Harris. 130 min. Widescreen; Soundtrack English. Two-disc set.

Scott Pilgrim Vs. The World (4K Ultra H

A century from now, the most privileged of Earth's populace will have abandoned the planet for the luxurious orbiting colony of Elysium, leaving a globe ravaged by environmental and economic collapse to the rest of us. A radiation-stricken factory grunt (Matt Damon) gets promised a cure by revolutionaries for his participation in a corporate kidnapping, but the evidence of corruption he uncovers makes him a target of Elysium's power-hungry defense secretary (Jodie Foster). Alice Braga, Sharlto Copley, William Fichtner co-star. 109 min. Widescreen; Soundtracks English DTS HD 7.1 Master Audio, Dolby Digital 5.1, DVS, Spanish Dolby Digital 5.1, French DTS HD 5.1 Master Audio, DVS; Subtitles English (SDH), Spanish, French (SDH); featurettes; extended scene. Two-disc set.