They take only supporting roles in numerous sitcoms, but without them, the shows would be only half as heartfelt and funny. Who are we talking about? The older generation of actors and actresses that often play the grandmas or parents of our favorite characters. In our gallery we have listed the most important grandmothers for you. Almost everybody knows Holland Taylor due to her part in the successful sitcom "Two and a Half Men". The actress celebrated her biggest success playing "Alan" and "Charlie's'" selfish mother "Evelyn Harper".