When you think of great monster movies, your mind usually goes straight to the obvious ones. Old classics like Alien, Jaws, ...
Dealing with a real-life giant monster attacking your city and destroying all your stuff would be horrifying for hopefully obvious reasons (a real "goes without saying" kind of thing that nevertheless ...
How the unlikely success of 1990's Teenage Mutant Ninja Turtles film paved the way for New Line Cinema to bring The Lord of the Rings to theaters.