Mary-Kate Olsen is making a television comeback with a role on the Showtime hit Weeds. The Full House alum will play appear in ten episodes next season as Tara, a devoted Christian girl who becomes a love interest for Mary-Louise Parker character Nancy Botwin's son on the show. "I'm thrilled to be a part of the show," Olsen says. "It's really an honor to be a part of such a talented group of actors and writers." Matthew Modine is ...