Okay, so forgive me for being on this BTTF kick recently, but I had another thought.
(and yes, I realize this might go better over at FE.org, but one of the frinking mods has it in for me).
As I was enjoying the end of BTTF2 and the start of BTTF3, an obvious thought dawned on me followed by a thought I don't think I've ever had, which is soon followed up by an interesting question regarding space/time. Eventually followed up by a revelation that will shock these forums to THEIR VERY CORE!
Obvious: The 3 BTTF Films are told chronologically from Marty's perspective.
New Thought: I think I'd like to see a fan edit of the three movies that tell the story chronologically from Doc's perspective. We start with a 1955 Doc who meets Marty, helps send him to the future, and then immediately meets another Marty, helps send him to the past... then flash forward thirty years and see Doc meet Marty at the mall and send him back in time to the 50s (wow, Doc seems to send Marty out in the time machine a lot... he must be dying (get it?) to get to try it himself!) Goes to the future, comes back, gets Marty and Jennifer, goes Back to the Future, chews out Marty abouts the sports almanac, rescues Jennifer, goes back to 1985, goes back to 1955, meets himself, rescues Marty, goes to the Old West, meets Marty again, meets Clara, falls in love, and then sends Marty, you guessed it, Back to the Future, then apparently gets married, has kids and learns how to make a flux capacitor that runs on steam.
*phew*
Sure, we're missing a lot of scenes that would be required to really make it make sense. But I think it would be interesting. Or maybe it's interesting enough just to think about it. I especially like that part where pt2 Marty comes up to 1955 Doc immediately after the end of pt1 and says he's back from the future. Seeing that in the context of the first movie makes my brain happy.
Here's the question: Does pt3 OldWestDoc not remember being pt3 1955Doc and sending Marty back to 1885? It's been 30 years, but he should still remember, right? As soon as Doc writes the letter to Marty, shouldn't he have memories of Marty bringing him the letter, the two of them finding the time machine, fixing it and sending Marty back to rescue... himself? And when he sees Marty in his ridiculous cowboy get-up, instead of asking "What idiot dressed you like that?" shouldn't he instead apologize for his ignorance of 30 years ago?
Or is that a different Doc? Just like Marty presumably doesn't have memories of growing up with the hip version of his parents... Does that pt3 1955 Doc now exist in a different 1955 (1955B. 1955AA being the Marty version of 1955 and 1955A being the old Biff version that leads to 1985A)? If that's the case, does any of that affect 1985C Doc? Maybe to the point that he doesn't create the time machine?
But wait! (Here's the juicy part!) In BTTF1, Marty left 1985, created 1955AA and then came back to 1985AA (since 1985A is already taken). What happened to 1985 Doc? He died! 1955AA Doc has forever been altered by Marty in 1955AA and has then become 1985AA Doc. 1985AA Doc didn't invent the time machine the same way as 1985 Doc. What was theory to 1985 Doc is practice to 1985AA Doc! Sure, he came up with the idea for the flux capacitor before the timelines diverged... but what about the idea to use a delorean? Marty's reaction would have been the same "Are you trying to tell me that you built a "time machine" out of a DeLorean?!?!" But 1985AA Doc could hardly answer, "Well, I thought why not build it with some style?" More likely he would have had to say, "Well... that's the car I saw when I was visited by a time traveling Calvin Klein in the 50s." What about deciding to steal the plutonium? Depending on when he read Marty's letter, he might have gotten the idea from the letter as well. What about setting the time circuits for 1955? 1985Doc did this because he was fondly remembering the day he thought of the Flux Cap. 1985AA Doc would have to do it to not mess with history.
And think of how odd 1985AA Doc's friendship would have been with 1985AA Marty. Doc would have had to have played everything very close to the vest to not screw that up.
HEY! WHAT HAPPENED TO 1985AA MARTY!?!?! The ONE WITH the TRUCK?!?!?! 1985 Marty MURDERED him!
The End.