Back to the Future

Back to the Future is a film trilogy directed by Robert Zemeckis that has been referenced to multiple times in Supernatural, mainly by Dean, who appears to be a big fan of the franchise.

The first film, Back to the Future (1985), introduces the characters of Marty McFly (Michael J. Fox) and Doc (Christopher Lloyd). Doc has made a time machine out of a DeLorean, and Marty accidentally ends up stuck in the year 1955. There, he meets his high-school aged parents, and has to play matchmaker to get them together. With the help of a younger version of Doc, he is able to get back to 1985.

In the second film, Back to the Future Part II (1989), Doc takes Marty 30 years into the future, to October 21, 2015. There they experience a future complete with flying cars, hoverboards, and self-drying clothes. After Marty successfully saves his future teenage son from going to jail, he again goes back to 1985, where he quickly realizes things are very wrong. He and Doc figure out that his father's high school bully, Biff, took the DeLorean from 2015 with a sports almanac containing statistics and results of everything from horse races to boxing matches between the years of 1950-2000. He had gone to 1955 and given it to his younger self. With this, Biff was able to become the wealthiest man around, creating a casino empire with the money he was able to make from gambling on the sports that he knew the results of. Doc and Marty go back to 1955 to get the Almanac back, which they then destroy. Right after this, a bolt of lightning strikes the DeLorean, which Doc had been flying overhead. The DeLorean disappears, leaving behind a thoroughly confused and worried Marty. Before he can start freaking out too much, a car pulls up and delivers a letter to Marty. The bemused deliveryman tells Marty that the letter had been sitting around for 70 years, and that it was supposed to be delivered to this exact spot, at this exact time to a man named Marty. Curious, Marty opens the letter and realizes it is from Doc, who has gotten stuck in 1885.

The story concludes in the Old West setting of Back to the Future Part III (1990), when Marty goes to 1885 to rescue Doc and ends up stuck there himself when the gasoline leaks out of the DeLorean and they have no replacement fuel. Without gasonline, they have no way to get the car up to 88 miles per hour, which is the speed at which time travel is possible. While he and Doc work on devising a plan to somehow get a steam locomotive to push the DeLorean up to 88mph, Marty meets his great-great grandparents, as well as Biff's great grandfather, Buford Tannen. He immediately gets on Buford's bad side, and ends up in a duel. Marty refuses to fight, and Buford shoots him. Everyone thinks he is head, but at the last minute Marty reveals he survived because he was wearing a cast iron oven door around his neck that worked as a bullet-proof vest. He and Doc manage to get the DeLorean going fast enough, pushed by the train, but at the last minute Doc decides to remain behind in 1885 to stay with Clara, a woman he had fallen in love with. Marty goes back to 1985 alone, but it's not long until Doc shows up again with Clara, in a new time machine that he built out of another steam locomotive.

• "Back to the Future" on IMDb
• "Back to the Future Part II" on IMDb
• "Back to the Future Part III" on IMDb