For those of you who may not have heard Phyllis Diller the voice of Thelma Griffin Peter's mother passed away on Aug 20th of health problems. This means that Thelma may not be making any more appearances on the show. in here may not Family Guy should something honorable by making an episode whereThelma died and it would be an emotional episode, too, especially for Peter. It would be interesting to see how he handles her death. They could even have a tribute to Phyllis Diller at the end of a new episode. Its sad when a familier guest star dies especially when the audience gets to know the character so well.