I'm interested in reading some stories of people that detail some of the classiest wins you've personally earned/received

A classy victory will mean different things to different people.

My personal criteria involves some of these:

Something completely unexpected that neither player saw coming.

An accidental and humorous play on my opponent's part that both literally and immediately lost him the game.

Winning with an overly long combo that requires unique actions to maintain (It cannot be demonstrated in a loop.)

Winning with a card that no one should really ever want to or be able to win with (Bushi Tenderfoot and Barren Glory come to mind.)