Sure, playing 4 TLTs is pretty dirty. But lets ignore that and go with moments you felt you really played dirty or really felt bad for your opponent.
I'll go first with the following:
Wampa shot a mint Kath Scarlett - Lieutenant Colzet had a target lock on her, flipped Blinded Pilot.
What happened every single turn after that until I had dealt with the rest of the list? Blinded Pilot was flipped down - Kath couldn't attack, Colzet flipped it back up at the End Phase - EVERY. SINGLE. TURN. Didn't even need to target her, just make my move within range 3 of where she ended up the turn before so that I could take that TL - didn't want to shoot down those shields and add more face down cards too fast!
God it was so evil!
Pretty crazy how that one card decided how the game went and finished.