Terry Southern of the Monty Python team. Cleese later described McGrath as having "no idea of comedy structure" and complained that the film ended up as "a series of celebrity walk-ons." The film was shot in London between February and May 1969. The cast was headed by Sellers (as Guy Grand) and Ringo Starr as his son Youngman Grand (a new character created for the movie), with cameo appearances by Spike Milligan, Christopher Lee, Laurence Harvey, Raquel Welch, Roman Polanski and Yul Brynner. As with "Dr Strangelove", Sellers habitually improvised on the script during filming. During production McGrath and Southern discussed a
Peter Sellers as "an indefensibly inept comedy", adding that "it is hard to name another good actor who ever made so many bad movies as Sellers, a comedian of great gifts but ferociously faulty judgment. "Manchu" will take its rightful place alongside such colossally ill-advised washouts as "Tell Me Where It Hurts", "The Bobo" and "The Prisoner of Zenda"". Sellers's final performances were a series of advertisements for Barclays Bank. Filmed in April 1980 in Ireland, he played Monty Casino, a Jewish con-man. Four adverts were scheduled, but only three were filmed as Sellers collapsed in Dublin, again with heart problems. After