The plot is much like most every Bond movie. Bond travels to an exotic location. He is introduced to The Girl (in this case, Ursula Andress), a gorgeous woman who begins a close relationship with him, albeit for one film only. Bond is captured by the villain, who tells him everything he knows, then Bond escapes to sabotage the villain's plans. The world is saved, and we owe it all to Bond, whose reward is celebratory sex with The Girl.
How I felt about it. But it's better than expected, and certainly better than most movies within the half-century series. Part of its appeal is its simplicity. Bond gets the better of many who oppose him simply by beating them up, although in some cases (as with Dr. Dent and the treacherous Miss Taro) he outwits them.
Bond's libido is perhaps strongest here. He's not going to let an impeding plane flight prevent an afternoon delight with Sylvia Trench, and he delays arresting Miss Taro until he's succeeded in bedding her. As the main Bond Girl, Andress is treated more chivalrously, but he's not above enjoying her company even within sight of Jack Lord, who is already typecast as a detective years before his long "Hawaii Five-O" stint.
It is difficult to watch Dr. No independent of the myriad succeeding Bond films. Each scene is minor movie history. The first introduction, "Bond, James Bond." The first flirtations with Miss Moneypenny. The first dressing down from M (Bernard Lee). The first Bond girl (Sylvia Trench, who has just a couple of scenes). The first villains, three Jamaican assassins. The first drink order, shaken not stirred. The first deadpan bon mot, "I think they were on their way to a funeral."
Is Dr. No fresher than the succeeding films, simply because it was made first? Actually, the second movie, From Russia to Love, is even better, perhaps because Bond seems more human and less like a man who can dispatch someone in the way with a push and a punch.
The third film, Goldfinger, is nearly identical to quality with Dr. No, since a great henchman (Odd Job) compensates for the already discomforting tendencies toward elaborate, preposterous action sequences. The franchise continues on a moderately high level through The Man with the Golden Gun, a sense of humor delaying formulaic decay. The age of overblown action begins with The Spy Who Loved Me, and probably continues to this day, although I've missed the last few films in the franchise.
How others will see it. Dr. No had a budget of a bit over a million dollars, which today wouldn't cover the salary of the actor playing Bond, even if adjusted for inflation. The character of James Bond was already known through Ian Fleming's novels, and the combination of action, adventure, and suspense proved highly successful at the box office. Young viewers like the film best, but it does well with all ages and both genders.
No one apparently cares about the likelihood of encountering gorgeous young Ursula Andress alone in a bikini on the villain's private cove. Then there's the preposterous finale. Bond breaks out of jail, sabotages the rocket sabotage, kills the villain, locates Andress, frees her, escapes the doomed fortress, and finds a handy speedboat, all within a few minutes. Nobody's that good.