PSI: Getting to Lassic. By the time I finally got to him, (ten years. I failed on the SMS version

,) I was REALLY glad to see him go.
PSII: The ending, because it was so shocking to find who was behind the menace.
PSIII: The beginning of Sean's quest. I was dumbstruck to find out what happened to two characters I invested so much time in, Ayn, and Thea.
PSIV: It used to be going to Rykros for the shock regarding my ideas about Algo, but now it's the Elsydeon scene because it tied everything together.