I just viewed the 1970 film Two Mules for Sister Sara with Shirley MacLaine in the title role. I'm not the first who wonders if it was pot she was puffing in a scene where she steps away to have a smoke. After deeply inhaling, she gets a beatific look on her face and has another toke. She wears a wonderful smile when she walks back to co-star Clint Eastwood.
MacLaine admits to trying pot brownies provided by VIP Robert Mitchum (with whom she had an affair) in one of her books, where she also says she tried smoking pot in a London hotel room.
Two Mules was filmed in Mexico and written by director Budd Boetticher, who lived there. According to Wikipedia, Boetticher had planned on using Mitchum as the male star of the film, and the part of Sister Sara was originally offered to Tokin' Woman Elizabeth Taylor.
co-star Jane Greer reported locals were always trying to foist joints on Mitchum.
The Two Mules film score was composed by Ennio Morricone, who's named as a pot smoker on the web, although I have not found confirmation. Since he's the brilliant composer of "The Good, The Bad, and the Ugly" as well as "The Mission" and other masterpieces, it would be nice to know!
In 1960, Boetticher departed from Westerns to make The Rise and Fall of Legs Diamond, a film loosely based on the lives of Jack Diamond and Arnold Rothstein, the US's first major drug dealer (who appears in F. Scott Fitzgerald's The Great Gatsby as well as Damon Runyan stories). Boetticher had a role in the 1988 Robert Towne movie Tequila Sunrise, starring Mel Gibson as a man who has a connection with a Mexican dealer (Raul Julia).
fumee d'opium et de chanvre (smoked opium and hemp).
Shirley is now playing the American grandmother going toe-to-toe in Downton Abbey with matriarch Maggie Smith (who starred in Travels with My Aunt, based on Graham Greene's story about an eccentric woman with a marijuana connection).