From Russia with Love is my personal pick, and I've seen all the James Bond films (including the unofficial ones). The second Bond movie has everything ... Because this was an early film, they could freely cull directly from the James Bond books, with plenty of other material to spare. read more
Another alternative, little well known and oft-forgotten. is my second-favorite Bond film: The Living Daylights, which has the most Fleming Bond in Timothy Dalton, an intricate spy plot, great 1980s action, and an engaging theme tune. read more