That was one of the best things about roleplaying with you Pandy. Even though we typically started with a script, the outcome (and the journey to the outcome... which is more important) was always up in the air. Sure we usually had desired outcomes, but when the situation demanded it, everyone involved stepped up to the plate and hit consecutive home-runs.
The most memorable, but hardly the only memorable, for me was the Aneirin near-death, one of my favorite RP-moments of all time. We were supposed to win the day that day and pave the way to the next encounter (at least from my perspective). Imagine my surprise when I lost the fight!
But great roleplaying can take all forms, Scripted, Improvised, semi-scripted, trash talking.
Good examples:
Scripted: Many small scale EM events (and a few large scale). The best for me was soggy-undead invasions of UP territory.
Improvised: Darn near everything that happened between UP and PGoH. Most memorable was when we raided their Navy and kidnapped Dove.
Semi-scripted: See above. The whole OvC thing was pretty fun for me.
Trash talking: Hook vs. Pike. You had to see it to believe it. Hard to keep sitting those days for all the laughter.
Bad examples:
Scripted: Some groups used RP as story telling, and ignored outside influences, even in public places (such as when a couple of pirates crashed a wedding, we were ignored away, despite our unruly behavior and foul mouths... we didn't fit the scene)
Improvised: There's a certain group somewhere else whose roleplay always devolves into **** and fart jokes.
Semi scripted: When the organizer of the scene or event can't handle the tangent and it falls to the participants to continue it (sorry, no specific example as the memorable one is stepping on toes which I still like)
Trash talking: Any trash talking which involves a form of noob or slurs.