Many fans of It's Always Sunny in Philadelphia have their idea of a perfect episode, and that's what makes It's Always Sunny so great. You ask 20 different fans, you'll get 20 different answers. But this episode in-particular is truly the best mix of the show's emotional and technical abilities. It's Always Sunny in Philadelphia continues to push the envelope season after season, but this episode stands out above the rest. Especially when you have Charlie Kelly, played by Charlie Day, in the drivers seat.