Setting foot in PS as an Akkaio enki, and seeing others actually
using my work, first-hand.
(After making mods for a single-player game for so long, this was ground-breaking for me)
Meeting Anumesa and Kenzel the first time, on the eve of their engagement, and the revelry that surrounded it.
Casting "Flame Spire" for the first time...

...and immediately doing it again when it ran out.
...For a full half-hour.

...I luv fire.
And most anything involving Sade. She's got the most peculiar (and endearing) speech mannerisms.