Um... the most memorable part I think was when you first encounter the TRex in the Chief's Room. That was terrifying when I was a wee lil' lad (or something like that).
But I also enjoyed Dr. Kirk's wayyyyy outdated insults. Like, I think he called Gail a bonehead or something like that if I remember correctly. That was impressive. And then at the end when Regina just puts her hand on her boobs and is like 'what? Unfinished business? This is fishy'.
The first time that the player is confronted with a choice is one of my favorites. Having a choice makes the player feel as though they have greater influence over the outcome, even if the impact on the story is limited.