For Those Who Think Young is a 1964 beach party film shot in Techniscope, directed by Leslie H. Martinson and featuring James Darren, Pamela Tiffin, Paul Lynde, Tina Louise, Bob Denver, Nancy Sinatra, Robert Middleton, Ellen Burstyn (billed as Ellen McRae), Claudia Martin and Woody Woodbury.
The film was made by Frank Sinatra's Essex Productions with director Leslie H. Martinson chosen for his fast-paced work on Warner Bros. Television as the film's production was just 18 days. All the beach scenes were shot at Mailbu Beach in one day. It featured the film debuts of Nancy Sinatra and Claudia Martin (daughter of Dean Martin) as well as a leading role for nightclub comedian Woody Woodbury, then the host of television's Who Do You Trust?.
Ellen Burstyn, who plays the part of Dr. Pauline Swenson, is listed in the credits as Ellen McRae, and famous surfer Mickey Dora is a college boy extra.
The white semi-convertible that James Darren's character drives is a radically styled stock $18,000 1963 Buick Riviera, designed by Burbank customizer George Barris originally to be his personal car.
The film was notable for extensive product placement for Pepsi Cola and several other companies, the title of the film being a Pepsi marketing slogan of the time.[