An in-demand character actress in both film and televison possessed of devislish comedic timing, Harriet Sansom Harris is perhaps best known for a pair of recurrring TV roles, first as Frasier Crane's gleefully unscrupulous agent Bebe Glazer on the NBC sitcom "Frasier," then as Wisteria Lane resident Felicia Tilman on ABC's hit primetime drama "Desperate Housewives."