as did Bart's teacher Mrs. Krabappel, and both instances left poor Ned Flanders a widower. Bleeding Gums Murphy's death sent Lisa Simpson into depression. Dr. Marvin Monroe was said to have died ...

Marcia Wallace, who voiced Mrs. Krabappel ... of "The Simpsons" overall. And that's just one character. Hayden is also responsible for memorable moments from the likes of Rod Flanders, Jimbo ...