Margaret Chenowith, Six Feet Under
Played by Joanna Cassidy
She was a psychiatrist, and she was a narcissistic cuckoo bird. She took over every room she entered. She kept no parental boundaries with her daughter Brenda (Rachel Griffiths, at left) and son Billy (Jeremy Sisto), who both emerged from childhood with serious emotional issues. After her husband died, she became lovers with her sons ex-lover and art teacher. And I loved watching her. Happy Mothers Day, you crazy thing.