Too Many Pinkie Pies, during the paint drying test. It was a funny scene and I wasn't exactly pissed off at the show, but I was quite baffled that Twilight would resort to such harsh means to solve the problem, and even more so that the writers were seemingly not aware of the implications. I mean, based on what the episode told us, those clones were sentient beings and Twilight was killing them off, and on top of that she could have easily zapped Pinkie by mistake. Meanwhile, we had Spike watching the carnage while munching popcorn and Rainbow Dash checking her watch because her friend's life-or-death struggle was apparently not exciting enough for her. What the heck was going on in that scene?