There are all sorts of crazy things one can do with King's Court. How about without?
In this game,
http://councilroom.com/game?game_id=game-20111023-131909-8df20ad8.htmlwith outpost+tactician+FV+saboteur, it is possible to sabotage many times per single turn.
In another game (I cannot find the log yet), with highways+swindlers+scrying pool+hamlets, it becomes possible to swindle everything in your opponent's deck to curses. It must be meaner if you choose not to finish the game at the same time...
This fun aspect of the game can only occur with unsuspecting opponents though (my apologies). In competitive play, this kind of game often becomes a coin flip.