Oh, that sounds awesome. I had heard of PIT, and I didn't know if it was going to be a straight knock-off of BTTF or not. Will definitely have to find, stories of time travel, alternate realities and the like have always fasc- oh...right. You guys already know that. XP.
Kristen Shelley's stuff is amazing (albeit, the earlier ones are more TAS-fare than the epics she writes later....I could do without the Middle Ages and dinosaurs), I wonder if she knows about Telltale's BTTF game? Or if she's here right now? =O
Back OT,The development and evolution of Marty and Doc as characters and friends, and as things go along are pretty well-done. I just got through reading No Place Like Home, after plowing through the other ones. I think "Pair O' Docs" is kind of the turning point from playful misadventures to serious and more dramatic storytelling. The mini-offshoot, "Hill Valley Chronicles" is pretty interesting too, if you're into the Old West and the last half hour of Part 3. But I won't say more.
Also, if you guys are into time travel that's NOT BTTF, which I'm sure you are, Michael Crichton's "Timeline" is a good one. RIP.