You don't have to call it "great". I'm wondering if our culture and values have fallen or risen since WWII. As of January 2017 or even the campaign leading to it, and as I've said in earlier posts, what was always there in the shadows of the American character is suddenly in center stage for all to see.
But I might suggest that you do yourself a favor and watch an old movie. You can rent it for chump change -- certainly -- at Amazon. It was produced in 1946, just after the war, the year of Trump's birth and a year before mine. It featured Dana Andrews, Myrna Loy, Frederic March, Teresa Wright, Virginia Mayo -- and, a very special guy in his acting debut -- Harold Russell. The title of the movie is "The Best Years of our Lives".
If you want to look for a character in the movie most like Donald Trump, his role is described as "Man in a bar" opposite the character Homer Parrish portrayed by Russell, which is one of several moving scenes. Among the others, is the scene towards the end with Dana Andrews alone in a B-17 junkyard, where the soundtrack really soars with dramatic effect.
I think you could track back through American cinema to see movies that have a lot to say about the people and issues of the times. "The Grapes of Wrath" is another one, and there's a movie which isn't even set in the US, but rather the Mexican state of Morelos, with a script by John Steinbeck whose book inspired the former movie. "Viva Zapata" features Marlon Brando in his third movie, with Jean Simpson, Joseph Wiseman, Anthony Quinn and several others.
The 1950s was a time I can only remember from childhood. Life was simpler, as were the people. And growing up "white" things looked a lot better than they should have, if you were a ten-year-old. "On the Waterfront" comes to mind, as does "Lonely Are the Brave" -- whose book author is buried in a place where we don't want any Wall. Of course, if I had been more accessible to certain films, I might have learned to appreciate "A Raisin In the Sun" -- which was pretty much a true story, and has a lot to teach about the better parts of the American character, in addition to some of the weaker sides we saw as underlying Rightie reactions to Obama.