Robert Altman tribute at Aero Theatre

Robert Altman’s beloved film “MASH” celebrates its 40th anniversary Saturday as part of the American Cinematheque’s retrospective “Maverick of the Mashup: The Genre Blending Comedies of Robert Altman” at the Aero Theatre.

The tribute begins Friday with a 40th anniversary screening of his controversial satire “Brewster McCloud,” starring Bud Cort as a man-child living in the Houston Astrodome who wants to fly. The second feature is the 1985 comedy “O.C. and Stiggs.”

“MASH” star Elliott Gould will be on hand Saturday for that screening, as well as the underrated 1974 comedy “California Split,” in which he stars with George Segal. Sally Kellerman, who also starred in “MASH” and “Brewster,” will appear at the Friday and Saturday screenings. And actor Paul Dooley is scheduled to be at Sunday’s double bill of 1978’s “A Wedding” and 1979’s “A Perfect Couple.” www.aerotheatre.com

Marxes in Glendale

The Alex Film Society goes “Marxist” this Saturday at the Alex Theatre with two screenings of 1937’s “A Day at the Races,” starring Groucho, Chico and Harpo Marx. Maureen O’Sullivan and Margaret Dumont also star in this film, which features a very young Dorothy Dandridge in her movie bow. Also on the bill is the Bugs Bunny cartoon “Stick Hare” and a “News Parade of 1937” newsreel of Amelia Earhart’s disappearance. Before the evening screening, Joe Adamson, author of “Groucho, Chico, Harpo and Sometimes Zeppo,” will talk about the Marx Brothers. www.alexfilmsociety.org

Hitch and organ

Organ music and Alfred Hitchcock come together for a unique concert-movie experience Saturday evening at UCLA’s Royce Hall. Organist Stephen Tharp will kick off the night with his own arrangements of scores penned by Bernard Herrmann for “Vertigo,” “Psycho” and others. Christoph Bull will then improvise a minimalist and trance-induced original score to Hitch’s 1927 silent film “The Lodger.” www.uclalive.org

Beverly Hills fest

The 10th annual Beverly Hills Film Festival will open Wednesday at the Clarity Theater with the world premiere of “As Good as Dead,” starring Andie MacDowell and Cary Elwes, as well as the documentary “Jesse’s Story” and the North American premiere of the Brazilian documentary “Sequestro.” The event culminates April 18 with a gala awards ceremony at the Beverly Wilshire Hotel.

susan.king@latimes.com