I would say classic is Citizen Kane, Casablanca, Gone with The Wind, Godfather 1-2 are all considered top 5-10 of all time, To Kill a Mockingbird, Wizard of Oz are on another level.
Butch Cassidy and Sundance kid, French Connection, Taxi Driver, Jaws, Easy Rider, Annie Hall were all considered great films, I have seen them and would agree. I would say Platoon and Saving Private Ryan and Full Metal Jackets are classics in sense of war movies.
I saw Star Wars in 4th grade in 1977, didn't see another one and will never. Indiana Jones never seen, leave it to the nerds to watch. Jurassic Park, I must say I have never seen Raging Bull as well.