For me it's when my big bro came home from high school and got a DVD from blockbuster (it's in the plaza next to the school) and as a tradition my brother would force comic and other forms of nerd propaganda into my brain (earliest I remember was a new hope and anything X-men) So he takes it out of the bag and it see Transformers movie written across the top and I'm like "Transformers has a movie?" (this was about 2003 the year of armada) So he put it in and I watched. I was like 6 and very distinctly remember crying (yes I cried and I admit it) when prime died cause I knew who he was thanks to Armada. From that point on I was transformed (get it?) and loved Transformers, it also brought in my love of decepticons.