In the movie 'A Million Ways to Die in the West' Dr. Emmett "Doc" Brown from 'Back to the Future' appears in one of the scene with his time machine. What is the connection with that old movie?
2 Answers
Just a cameo which only raised a bit of inconsistency.
This film takes place in 1882 and is inconsistent with the Back To The Future timeline, which places Doc in the west during 1885 and later.(Source: Wikipedia)
Back to the future was(is) a very popular movie, there is no real importance or connection except to give you a few kicks