There are so many great ones. Obviously the ice rink campaign fiasco. Some occasionally overlooked ones are when Leslie accidentally barrels her campaign bus into her competitor's father's funeral. Also, when Leslie has to fill in for Ben at a press conference because he has kidney stones, and she is driven by the unruly crowd to shout "He is in the hospital, sir! He has a calcified rock lodged in his penis!". And of course anything involving queen April Ludgate.
