Was it when the first book came out? The first movie? Just recently? For me, it was shortly after the Sorcer's Stone was catching attention-- it was a Christmas gift from my Aunt in 1999. I saw the first movie in the theatres when it came out, on the same day I broke up with my boyfriend (I was a senior in HS at the time). I can't believe how long ago that was! It's been so interesting to watch the franchise grow and develop for well over a decade! Just curious to see when others were first introduced to the HP world.