Yeah, my older sister used to be a huge fan of Mary-Kate and Ashley when they were popular (and within the next several years, my younger sisters became obsessed with them too). We've had several of the You're Invited to Mary-Kate and Ashley's (*insert name of occasion*) Party videos (Sleepover, Christmas, and Ballet), one of the The New Adventures of Mary-Kate and Ashley videos (The Case of the Logical i Ranch), one of their direct-to-video movies (Passport to Paris, where they play the parts of Melanie "Mel" and Allyson "Ally" Porter, and one of their feature length films (When in Rome, where they play the parts of Charlotte "Charli" and Leila Blake), several books from their Two of a Kind series (I don't know which ones), the Mary-Kate and Ashley's Walt Disney Adventure book (I know it was told from one of the twins' point of view, but I don't remember which one. Also, this was the only Mary-Kate and Ashley paraphernalia that I enjoyed).
Throughout the years, I've had to put up with several other of their videos. We would mainly borrow them from the library, video stores, or from friends of my sisters. I remember as a kid, I never understood how those 2 had a lot of friends, and chose different ones for each party in their You're Invited to Mary-Kate and Ashley's (*insert name of occasion*) Party videos.
I know that my sisters might have collected other Mary-Kate and Ashley paraphernalia, but I don't remember what it consisted of.
Either way, this is pretty much my whole history with Mary-Kate and Ashley.