Here's another interesting video that may be considered on-topic if you try to practice accents by memorizing lines from movies, acting them out, and see if you get the accents right. It's from Erik Singer who's a dialect coach (he teaches actors to prepare them to use particular accents for characters they play in various movies):
The full scenes are not given, but you can find details like titles and actors. He also has more videos in the channel.
Here's another one, from "Every Frame a Painting." They refer to scenes that may be considered because there are certain mannerisms from actors like Mifune that you can copy, as well as scenes to memorize if you want to have particular shots and block movements in certain ways to get a desired effect.
Again, full scenes are not given, but titles of movies are. There are also more videos in the channel, including some featuring Jackie Chan's films.