“A Night at the Opera.” Voyager/Criterion...

“A Night at the Opera.” Voyager/Criterion Collection, full-feature CAV format, 1935, black and white, $79.95. Information: (213) 474-0032.

Any fan of the Marx Brothers should run, not walk, to the nearest laser disc store for this overwhelming tribute to Groucho-Chico-Harpo’s peculiar brand of comedy. Not only is the original film included here in pristine condition, but there’s also a superb audio essay by critic Leonard Maltin on the second audio track and a video “Marxbook” that includes publicity film footage, stills, the original trailers for both “A Night at the Opera” and “The Big Store,” a video tour of one fan’s Marx Brothers collection, and other memorabilia. Every major scene is indexed--you can immediately replay such vintage Marx Brothers’ shenanigans as “the contract” and “crowded quarters” (two of their funniest scenes) as well as the hilarious “Il Trovatore” finale.