A Strange Occurance

So, I was bored and decided to see if I could find out if my professor had done anything recently, since he did say he was inloved in the Williams Institute at UCLA Law, which works for GLBT rights. As it turns out he wrote a book, which I'd actually rather like to get ahold of and read:
http://www.amazon.com/gp/product/0814706924/ref=pd_po_rvi_1/002-6157130-8078449?%5Fencoding=UTF8&v=glance&n=283155
That's not all that strange. He's got a JD and a Ph.D in issues in sex and gender; it's not surpirizing he wrote a book on sex in the law. What was strange was that off to the side, amazon said, "based on yoiur recent searches, you my be interested in the following items," one of which was the "Trading Places" DVD of the Eddie Murphy movie from 1983. It's a movie I watched several years ago with Steve and Ezra, that Steve thought was amazing and Ezra and I thought was so-so, but humored Rabbi anyway. My recent searches have been for the above book, the wine book I sent Kevin, and some music albums as I was trying to organize iTunes. Nothing having anything to do with this movie. How would it have come up? Of all things, why this one movie that will forever remind me of Steve?