Hayley Mills?
You got it! I could have included The Parent Trap and The Trouble with Angels, but that would have been too obvious. (I think.) 
I’ll be amazed if you can name the star of The Sad Sack from 1957.
I saw ffolkes on the big screen when it made it’s way across the Atlantic to the US. I still love it. Anthony Perkins, George Baker, James Mason, other well known names. Some really dry humor too, and I loved his award at the end of the film.
That one I couldn’t do, @terentii. I think I only remember Castaways from seeing it when I was a child, and as I recall, it was very exciting. Might be why I remembered it; it made an impression.
Not sure when I’ll be in London again, though. But I’ll keep you informed. 
I’ve seen all three of those movies.
I remember the part where Haley and the others are being chased by the natives with burning torches, and they set fire to the rope.
My mother sent me and my older brother to the movies every Saturday just to get us out of the house. I saw all of the Ma and Pa Kettle, Francis the Talking Mule, and Martin and Lewis movies by the time I was six or seven.
The Bowery Boys were on TV every Sunday morning.
Bittersweet film- Schultze Get the Blues.
Very little dialogue, some cool Cajun zydeco music.
How I Spent My Summer Vacation. 1967 TV movie with Robert Wagner and Peter Lawford playing cat and mouse. Jill St. John, Lola Albright, Walter Pidgeon and Michael Ansara round out the cast.
Man’s Favorite Sport? Rock Hudson as a fishing expert (who isn’t an expert at all) that gets entered into an angling derby by his boss at the suggestion of public relations agent Paula Prentiss. Great slapstick comedy.
One of my favorite films to watch on cable as a kid in the 80s was the 1980 film Midnight Madness It was about teams of college students going on all night scavenger hunt. It also feature Michael J. Fox in his movie debut.
The Hudson movie turns up on Silver Screen occasionally. I saw it during the pandemic.
The Sad Sack was a post–Dean Martin vehicle for Jerry Lewis. I saw it during the winter of '61, I think. I was disappointed because it wasn’t much like the comic book. It had Peter Lorre and David Wayne in the cast, though.
Like the other movies I mentioned above, you don’t see many Jerry Lewis movies around any more.
NM already answered
Yes, Jerry Lewis. Like The Delicate Delinquent, The Big Mouth, and The Disorderly Orderly. Pretty regular stuff when I was growing up.
Sorry, I didn’t realize you were answering my question. My bad. 
When I was about sixteen, I recall enjoying this film on HBO or Cinemax, just a year or so after it was shown in theaters. Spielberg helped produce it, but took his name off it when he disliked the finished product (not sure why).
Uptown Saturday Night was a movie that was shown at the summer camp I went to. Yearly for like 6 years in the late 70s and early 80s.
Great film- then, I tried to rewatch it, and now its dated.
Mentioned that upthread.
Two I think worth mentioning: First is The Gods Must be Crazy from 1980 (forget the sequels), which is rather hard to define but I seldom have laughed as hard at any movie while also being near tears for several scenes. Don’t think it’s played much anywhere these days, but if you have the chance…
Second is Chocolat, set in a French town when a woman opens a Chocolate shop in a small French town and it’s effects on the people there. It gets mentioned because Johnny Depp has a (small) role in it, but it’s just a beautiful film that is almost never played or seen on TV.
Which movie?
Babette’s Feast. I ought to make a list of the dishes in the movie and look up their directions.