Mrs. Landingham, The West Wing
Karen McCluskey, Desperate Housewives
Mrs. Tanner, Scrubs
Warden Betsy, Seinfeld
Thelma, Home Improvement
Ward Nurse, The Nanny
Claire, Dharma & Greg
Old Lady God, Joan Of Arcadia
Vera, Fraiser
Edna Manning, Even Stevens
Maisie Joyce, Harry's Law
Grandma Marilyn, Suite Life Of Zack And Cody
Maureen, King Of Queens
Angie, Mega Python vs. Gatoroid
Donny's Mom, My Name Is Earl
And if none of these roles ring a bell, might I suggest you take a peek at her fully stacked IMDb page? She's been in everything from Monk to Grey's Anatomy, Gilmore Girls to Boston Common. She will be missed.