Gimme Your Part IV Ideas

I'd have Doc and Marty travel to the present day, to prevent the sequel being made.

Marty and Jennifer's teenaged daughter is dating a histper who acts like it's the nineteen fifties all the time and is amazed by everything around him as if it's from the future. The rest writes itself.

Lol what a garbage idea. Go jump in a lake, bozo.

I want a spin-off about future Marty, future Needles and Fujitsu-San or whatever his boss name was. Maybe something similar to the office. If Michael can't hide his shaking they can implement it into the story and blame it on the car accident Marty had.

They have spent the last 27 years doing a great job of implementing the best Part IV strategy: Not Making A Part IV.

What about a sort of crossover where Back to the Future and The Terminator intersect? Doc Brown could outfit the Delorean with some kind of atomic cannon and he and Marty could jump from past to future blasting robots, all the while trying to find John Connor. Eventually they realize Marty IS John Connor, and Doc is his grandfather. Both were brainwashed into forgetting by John's Mom in an attempt to keep them safe. Once he knows who he is, Marty has Doc surgically merge him with a robot they've blasted, and in the final scene Robo-Marty-John takes on the remaining Terminators who, sensing they are losing, have meshed into one giant robot, sort of like a Transformer. Just when all seems lost, Biff shows up with the Delorean he borrowed in part 2 and sacrifices himself to save Marty and turn the tide. After defeating the robots and saving the planet, Doc and Marty build a robot version of Biff and program it to go back and behave as he did in part 2 so as not to ruin the timeline. All is saved! Roll credits...

... post-credit teaser for a part 5 in which Doc and Marty seem to have found a way to use the Delorean for interdimensional travel. They get out and a shadowy figure approaches. Just before the screen goes black, we see his claws pop out and realize it's Wolverine!