Dr No (1962)
When another Secret Service agent is killed in the West Indies, James Bond is sent to investigate. He finds more than he bargains for, particularly in the form of Honey Ryder (Ursula Andress, whose opening scene is still counted as among the most memorable in any of the Bond films). Plenty of action, humour, and just typical downright Britishness help Bond save the day, and make this film very enjoyable.
Of the other Bond films, I think “From Russia With Love”, “Thunderball”, and “The Spy Who Loved Me” were probably the better ones. From “Moonraker” onwards it just seemed to me to get a bit too silly for its own good.