All You Need Is Cash

All You Need Is Cash also known as The Rutles is a 1978 television film that traces in mockumentary style the career of a fictitious British rock group called The Rutles. As TV Guide described it, the groups resemblance to The Beatles is purely and satirically intentional.citation needed

All You Need Is Cash was one of the first films of its kind, and an inspiration for the successful Rob Reiner cult comedy This Is Spinal Tap, released in 1984.The Rutles were played by Eric Idle, John Halsey, Ricky Fataar, and Neil Innes. The band originally appeared in a sketch on Idles program Rutland Weekend Television. The sketch was later rebroadcast on the American television show Saturday Night Live. For the film, Fataar replaced David Battley as Stig. ........

Source: Wikipedia