Most memorable encounter? For several months, my best friend, Mark M. ran a Champions game with just 3 players (a small group for us). But he eventually decided to open the game up to the full group (I think it grew to like 10 players), but to cap off the switch he had us fight against a being who destroyed our universe and when we woke up it was a brave new world, one we didn't quite have memories of. It was excellent and one of many ways I've enjoyed Mark's tenure as a GM.
Rarest RPG owned? The original Empire of the Petal Throne.
Favorite RPG of all time? DnD 5th Edition. It's exactly what I've always wanted out of DnD. Close runners up are Champions, Feng Shui, and Over the Edge.