Pikachu-colored-Pichu, believe it or not. I've been playing Pokemon since the first generation but never was lucky enough to attend any events. Even when Gamestop was distributing Deoxys, I didn't bother going because I had taken a break from Pokemon.
EDIT: Actually, I *did* get an unofficial "event" Eevee from a Pokemon panel at a convention. Can't remember whether it was before PCP or not, but it was shiny and it was named after the MC's newborn daughter. I thought that was really cute. (: