Supernatural's Back To The Future Allusions

                                          
Supernatural is one of those shows that have everything covered, no matter if it's ghosts, demons, angels, or heartbreaking stories of brotherly love and angst.  Yet there's tonnes of pop culture references involved too.  So every now and again we get references to movies, TV shows and one such allusion was to'Back To The Future.

In 4.3 In The Beginning. when Dean (Jensen Ackles) was sent back home and met his 'future' parents and grandparents, there were numerous scenes which were similar to the movie.  On top of that he remarks to Cas (Misha Collins) about whether angels have DeLoreans?  The scene in the bar where he's with Dad and someone shouts out, "hey Winchester!"  Leading both Dean and John to turn around.

5.13 Song Remains The Same  the title was to be Back To The Future II but had to be changed cos there was no approval given for the use.  None the less it was left to Dean to come up with another reference to the movie and once again a DeLorean reference to Cas saying he's like  DeLorean without plutonium.

6.18 Frontierland is riddled with Back To The Future III references when Sam (Jared Padalecki) and Dean travel back to the Wild West.  With Dean calling himself Clint Eastwood, (Marshall Eastwood) as Marty (Michael J Fox) did too.  Even the letter at the end.  The link below references the movie in my review of the ep, in the penultimate paragraph.

http://mila255.blogspot.co.uk/search?q=supernatural+frontierland

Season 7.12 Time After Time has Back To The Future II references with Biff and Dean says he's "using the Chronos strategy" to bet on races when he already knows the winners.  In the movie Biff Tannen from 2015 gives the younger version of himself in 1955, a sports almanac, knowing the outcomes of the sporting events he becomes filthy rich.
Jim Michaels also worked on this movie.

Dean also resorts to needing some paper as in Back To The Future III.  When Doc Brown is in 1885 he lets Marty knows what's happening by writing a letter and ensuring it's delivered 70 years later. This takes place at the end of the second film, but the letter's contents are revealed until the third.   This is what Samuel Colt did to make sure Sam and Dean get the Phoenix's ashes in Frontierland. Dean's letter is from 5th November 1944 and Marty's letter was dated 5th November 1955.