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 on the set. Sellers also became unhappy with his wife's performance, straining their relationship and triggering open arguments during one of which Sellers threw a chair at Ekland. Despite these conflicts, the script was praised for its wit. Following the commercial success of "What's New Pussycat?", Charles Feldman again brought together Sellers and Woody Allen for his next project, "Casino Royale", which also starred Orson Welles; Sellers signed a $1 million contract for the film ($ in dollars). Seven screenwriters worked on the project, and filming was chaotic. To make matters worse, according to Ekland, Sellers was "so insecure, he