In “Gravity” (2013), spacewalker-in-jeopardy Sandra Bullock faces a wait for rescue — or death — that’s clearly interminable for her. We sort of know the feeling, anxiously as we’ve anticipated the film’s release on disc, and an inside look at how its stunningly immersive zero-gravity world was created. The disc devotes over 100 minutes to featurette material, and answers all the questions you’d hope, even if it takes some time to achieve liftoff. Thanks to the movie’s success and genre appeal, this is an expansive package, one that arguably gives an even better sense of director Alfonso Cuarón than we’ve gotten from discs such as his “Y Tu Mama Tambien” and “Children of Men.” Some opening interview material with Cuarón and his son and co-writer, Jonas, floats roller-coaster analogies and other clichés, but soon turns to more insightful discussion of the script’s various metaphors. Still, you start to wonder if Cuarón is holding on to secrets for some unlikely sequel. (“Gravity 2: Really Out There”?) And then, finally, showtime: multiple looks at Bullock and George Clooney manning what looks like a customized cherry-picker bucket, being shot by a sci-fi-worthy robotic camera against a cutting-edge LED array that projects their celestial environment all around them. We also see Bullock hooked up to, yes, puppeteer strings for her space station “swim.” Fascinating stuff that’s alternately accessible and mind-boggling. Another extra of note is “Aningaaq,” an original short by Jonas Cuarón imagining who’s on the garbled receiving end of Bullock’s mayday call down to Earth. (Warner, $35.99; Blu-ray, $44.95)
THOR: THE DARK WORLD (2013)
Chris Hemsworth once again manages the neat trick of making Marvel’s faux-Shakespearean thunder god feel legitimately, rousingly superheroic, with another assist from his witty supporting cast (Natalie Portman, Stellan Skarsgard, et al.) and Tom Hiddleston’s gleefully duplicitous Loki. All were surprises last time; the unexpected touch here is featured villain Christopher Eccleston (“28 Days Later”), and what a creepy presence he is as, yes, an elf bent on destroying the universe. Extras: commentary by Hiddleston, director Alan Taylor (“Game of Thrones”), and crew; unusually subversive Marvel Universe short giving Ben Kingsley another chance to vamp as his “Iron Man 3” terrorist-thespian. (Disney, $29.99; Blu-ray, $32.99; 3-D, $39.99)
L.A. LAW: SEASON ONE (1986-87)
And . . . cue saxophone wail and slamming Jaguar trunk. The genre-transforming legal drama makes its overdue DVD debut, giving us a collective flashback to our first impressions of the driven legal team at McKenzie, Brackman. Recall the moral debates and maneuverings in the conference room and the courtroom. The fresh career starts for Harry Hamlin and Susan Dey. The start, period, for Jimmy Smits. The after-hours raciness. The ’80s glamour. The hair. And yes, fans, the “Venus Butterfly” episode is included. Extras: new interviews with series co-creator Steven Bochco, Hamlin, Smits, and castmates Corbin Bernsen, Jill Eikenberry, Michael Tucker, Susan Ruttan, and Larry Drake. (Shout! Factory, $29.93)Tom Russo can be reached at firstname.lastname@example.org.