A man visits a tourist attraction with some friends from out of town.
Close Encounters of the Third Kind
Frat boy nails a hot babe illegally.
Couple’s friends don’t want them dating. West Side Story/Romeo and Juliet
Equipment designed by lowest bidder breaks. Apollo 13.
Adopted man accidentally meets his birth mother and gains new friends. Ten Commandments.
Son’s leadership revitalizes family business but strains his marriage. Godfather II.
The funny thing is this can describe a bunch of different movies, from Weird Science to The Matrix, and they’re all equally right.
An elderly man does a favor for some young girls. Unforgiven
Man finds a case packed with money and is pursued by a second man with a bad haircut. No Country for Old Men
Girl from “Fly-over country” takes a trip.
The Wizard of Oz.
Single mother finds love and success after moving to a small town.
Young couple overcomes obstacles in showing that crime can pay.
(Two or three possible answers to this one, depending on how you count.)
A bunch of guys dig a hole to try to get home.
The Great Escape
Hillbilly gets his wish granted after officially being declared dead.
Businessman gives a bunch of people jobs. Schindler’s List
Woman goes to therapy to work through body issues Deep Throat
Truck driver messes up delivery The Road Warrior
People resolve their issues with lots and lots of punching. The majority of superhero movies of the last two decades
Our favorite film, you say? I can’t name just one, but I’ll start with this one:
Some unemployed lads in the UK decide to try self-employment instead. The Full Monty
Ex-con remembers details other people might have written down.
Two buddies go on a road trip out of love. 
Cop quits his job, but goes back.
Mad Max
Profane eccentric overcomes obstacles to become a national hero.
A woman listens to radio broadcasts at work with her boss.
This is very similar to a game my sister and I used to play. We would try to guess the movie from the one sentence description from the TV listings in the newspaper.
Here’s an actual one from the paper from back then, to the best of my recollection:
A boy wants a BB gun for Christmas.
Some I just made up:
A spaceship has a problem. Apollo 13
A group of children tour a factory. Willy Wonka & the Chocolate Factory
An AI algorithm exhibits unexpected behavior. 2001: A Space Odyssey
A salesman drives to Bakersfield. Duel
A man and his father look for a cup. Indiana Jones and the Last Crusade
A petty criminal dresses up like pretend charcter, saves Christmas.