The Magic Christian is a 1969 British satirical farce black comedy film directed by Joseph McGrath and starring Peter Sellers and Ringo Starr, with appearances by John Cleese, Graham Chapman, Raquel Welch, Spike Milligan, Christopher Lee, Richard Attenborough and Roman Polanski.

It was loosely adapted from the 1959 comic novel The Magic Christian by the American author Terry Southern, who co-wrote the screenplay adaptation with McGrath. The film also features pre-Monty Python appearances of John Cleese (credited) and an uncredited Graham Chapman, who had jointly written an earlier version of the film script. It also features an uncredited appearance by Yul Brynner performing “Mad About the Boy” as a drag artist.

https://en.wikipedia.org/wiki/The_Magic_Christian_(film)