First off, here are the original trailers for the film:
For comparison, here's the trailer of Seven Samurai, the Akira Kurosawa film that served as the basis for The Magnificent Seven:
Here's a nice making-of documentary on the film, in four parts:
As we discussed, the film eventually launched a television series in the 1990s. Here's the original TV pilot, which led to two seasons of the show.
And here's a trailer for the remake from Antoine Fuqua, now in theaters:
Thanks for listening!