You don't hear much about this James Bond movie in all the celebration that's going on because of the 50th anniversary the beginning of the film series. I don't know the whole story behind the film, but apparently the makers of the other movies didn't own the rights to the novel version of Casino Royale. So in 1967 we got the goofiest Bond movie of all time.
Many directors and writers, both credited and uncredited, worked on the movie. It's sort of as if they tossed the book into a blender, put the parts together at random, and tried to make a spoof of the other James Bond film. David Niven, as Bond, becomes head of MI6, and to fool SMERSH, he names all the other agents James Bond. See the trailer above for the results. Yes, even Woody Allen and Ursula Andress. To try to describe the plot wouldn't do much good.
The best thing about it might be the theme, maybe my favorite Bond theme of all, even if it's not official. The movie, though, is a mess. It's an entertaining mess at times, but the times are few.