Remember Marty, Doc Brown, Einstein? If you haven't introduced your kids to these classic characters, it's way past time. It's now available on DVD as a trilogy.
But if you don't want to shell out the $23 on Amazon, then it's available on Amazon Prime (all three movies), or Netflix (DVD only, not streaming) or just pick up from the library which is what I did for my middle grade daughter. She loved all three movies. My prediction is that you'll have to put a hold on each movie at the library in the trilogy because it's probably going to be a very hot item for a little while.
Did everything that happened on BTTF on October 21, 2015 become reality? I'll let you see for yourself.