Just before the credits rolled on last night’s Simpsons episode “The Man Who Grew Too Much,†there was a brief but emotional tribute to the late Marcia Wallace, who voiced Edna Krabappel and passed away at age 70 back in October. In the scene, Krabappel’s recent husband Flanders envisions them dancing together in a heartfelt dream sequence, and even Nelson chimes in about how much Springfield misses its finest fourth grade teacher.