Back to the Future Part III (1990) ending / spoiler
Marty returns to 1985 and the DeLorian is distroyed by a train. Doc builds a new time machine in 1885 and visits Marty. Doc is married with two sons named Jules and Verne. Marty doesn't race against Needles and thus doesn't crash into the Rolls-Royce, and so he doesn't get into the job that he gets fired from.
Submitted by Artp