Oh, Noodlebug, that was indeed a great game, certainly a very charged game, as well as my longest actually. Perhaps I was foolish, but I was not inexperienced. =)
As for my best game, I don't really know. I don't have a very good memory, and typically found some fun in most.
Masterminds V
http://www.phpdiplomacy.net/board.php?gid=1462
This game is one that is still a little fresh in my memory, and it was quite fun. While not winning, I did manage to take a consolation prize by migrating to England to surprise him, and steal some of his centres for a slice of the Dip$ pie. Great play by PolishTeaParty when he doublecrossed me just as I stabbed my long time ally The Mahatma. They would both end up turning against me, and I probably ended up annoying them with my persistent messages attempting to sway them. Great game all around.