5) Marty's 2015 Self-Lacing Nike Sneaker
​That's not a typo above, only one of Marty's futuristic sneakers is up for auction. I have no idea what happened to the other one, although I imagine it is in the possession of a morbidly obese Michael J. Fox fan who spends his or her days singing "The Power of Love" to it whilst obsessing over the diet pills episode of Family Ties and mainlining Diet Pepsi. Anyways, it's the perfect gift for the one-legged BTTF fan in your life, so bid early and often.

4) Grays Sports Almanac
​Fashions, music and attitudes may change, but degenerate gamblers are truly timeless.

3) The Bob Gale Experience
​Robert Zemeckis gets all the credit, but Bob Gale is equally responsible for the success of the Back to the Future films. He co-wrote the trilogy with Zemeckis, helped develop the animated series and Universal Studio ride, and is currently assisting with the production of the upcoming Back to the Future title from Telltale Games. The winning bidder of this auction gets the opportunity to have lunch with Gale at a Los Angeles restaurant, pick his brain about the films and get whatever merchandise they want signed. (For the record, I'd probably also find some time to ask him about his pre-BTTF Zemeckis collaboration, the Beatles-inspired I Wanna Hold Your Hand). If the winner is unable to travel to L.A., Gale will conduct a one-hour phone call with him or her. What a guy! This auction is wonderful because of how rarely ordinary folks outside of the media get an opportunity to speak with filmmakers. It's also great that Gale is willing to offer up this experience... especially given the potential for social awkwardness that such a meeting could conjure up (a la the Curb Your Enthusiasm episode where Larry had a charity lunch). For die-hard fans of the McFly saga, this is an unmissable chance to have a meaningful discourse and learn true behind-the-scenes insights in a personal way that DVD and Blu-ray commentaries could never provide.

2) Disappearing McFly Family Photo (Eric Stoltz Variant)
​Noah Baumbach's Kicking and Screaming and Mr. Jealousy prove that Eric Stoltz is a gifted comedic actor. Yet for whatever reasons, he just couldn't click with the character of Marty McFly and was infamously replaced after a month of shooting. The release of the new BTTF DVD and Blu-ray sets give us a rare (and dialogue-free) glimpse into what Stoltz's take on Marty would have been like through some footage snippets. These brief clips are fascinating because Fox owns Marty McFly so singlehandedly, the cliché that it would be impossible to imagine someone else in the role seems truer than ever. The above photo of Stoltz's version of Marty standing with siblings Dave and Linda may as well be an artifact from Fringe's parallel universe (where he retained the role). The disappearing McFly family photos featuring Fox are up on the auction block as well, but they aren't as nearly as fascinating as this compelling piece of "what if" memorabilia.

1) Replica DeLorean
​Technically, this item auction is a cheat as it was never featured in any of the Back to the Future films. That is a tiny nitpick though, as this is such an amazing replica of Doc Brown's time machine that it does everything but travel through the ages. Car customizer/geek of the century nominee Joe Walser spent four years tracking down vintage parts and accessories to construct "the most technically accurate reproduction of the iconic DeLorean time machine from Back to the Future ever built" (The tech-heavy details can be found here). After spending so much time making his passion a reality, Walser decided to put the vehicle up for auction in the name of charity. That may be even more impressive than the car he so painstakingly built. The power of love is a curious thing indeed.