Casino Royale is the only film where James Bond dies.

Despite the long scene where they play each other at baccarat at the casino, Peter Sellers and Orson Welles were never on set at the same time. There are a number of theories ranging from stage fright to their alleged intense hatred of each other.

During the "torture of the mind" sequence, one of the bagpipers stops Peter Sellers and asks him if he is Richard Burton, to which Sellers responds, "No, I'm Peter O'Toole." The piper then says, "Then you're the finest man who ever breathed." The piper in question is Peter O'Toole in a cameo, and the exchange is a two-fold reference to the 1965 film "What's New Pussycat?", which starred both O'Toole and Sellers: first, Richard Burton had a cameo in that film and had a similarly surreal exchange with Peter O'Toole; and second, there is a dialogue between O'Toole and Sellers in that film where Sellers says O'Toole is the "finest man who ever breathed."