The best was the initial sense of wonder and excitement. The first time on a ship, or seeing a thunderstorm, and when the mission storyline starts to pick up. Before the MPK patch, when swarms of people would book it out of dungeons because of an insane ghoul. =D Ahh, I loved t.

The worst? Uhh, when a friend and I decided to trade jobs (I became a whm and he switched to my usual blm) and went to Valkurm, joined a party, and the two of us made a drinking game out of exping. -.- I'll admit that it was fun as hell, but a drunk whm that doesn't usually play as a whm is a very bad thing. I didn't show my face in that game again for a good month or two, just long enough for all the pissed off people to forget I exist.