What classifies a 'good movie'?

There are many different aspects of a movie to be considered when concluding if a movie was actually good or not. Most people will ask if a movie was any good, not simply if you liked it or not. But good is such a relative term!! Let's break it down.

For a movie to be classified as good, it needs to have certain characteristics.

1. Rewatchability- First and foremost, a good movie needs to have rewatchability or the ability to re-watch a movie and get further enjoyment. Some movies are good to be seen only once. That doesn't mean it was painful to sit through the first time, but that future viewings will not have a very high return on investment, the law of diminishing returns. Most comedies seem to shoot for high rewatchability.
2. Quotability- When a movie provides one-liners and quotes that you can use, it was a good flick. Dumb and Dumber is a great example of a movie with good quotability.
3. Quality- The overall satisfaction that one leaves a movie with: believable characters, intense fight scenes, well placed jokes, emotion, and a smooth flowing plot. I'm not one to really break down the cinematic elements or level of drama because I have no background or experience in acting. But there is a general satisfied feeling that comes to you at the end of a movie. Even a sci-fi movie has to have consistency and quality to make it believable.
4. Afterglow- When a movie makes you think or evaluate your life, values, and relationships without insulting you, we call that the afterglow. The ability of a movie to make you want to be better or make a change is important too.

I think that these 4 categories pretty much cover the aspects that make up a good movie and serperate it from just an average film. You can like a movie, but without certain levels of any or every one of these, you shouldn't really call it a good movie.