There is an old saying, "Be careful of what you ask for, you might get it". But men will be men, and when Dudley Moore sees the beautiful Bo Derek, he is compelled to follow her to Mexico. I suspect most of us men have had the same impulse, though I doubt very many of us have taken it to the extreme that Dudley Moore does here.
I could have done without the slapstick, and I didn't care for Julie Andrews as Moore's girlfriend. One wonders why he would stay with such an unappealing woman, regardless of what happens with his pursuit of Bo Derek.
But those annoyances aside, this is a wonderful film, full of good performances. Brian Dennehy is great as the bartender; the scene in which Dudley Moore sits down and starts ordering doubles is wonderful. Dennehy plays the bartender to perfection, not volunteering too much information, but being accessible to the customer as needed, just like a good bartender is supposed to do. And then after some rapport has been established, he does volunteer a nice compliment to Moore which the viewer is glad to hear.
Moore, after all, is a lovable character, just like he was in Arthur", and we root for him and want him to find whatever it is that will make him happy. And his anguish is not limited to his urge to connect up with a beautiful young woman. He is also anguished by the kind of music kids nowadays are listening to. He realizes he is not at home in a culture in which a young couple can say that "our song" is "Why Don't We Do It in the Road". Having reached this understanding, he can then understand also how he could never be happy with a woman half his age.