Bob Saget

 In 1992 Mary-Kate and Ashley shared the role of Michelle Tanner when they guest-starred on the Full House crossover episode of Hangin the Night with Mr. Cooper. The Olsens began to appear in their own films and TV shows while they were starring in Full House. To Grandmother's House We Go was the first such film and included a variety of Full House actors as cameos. The Olsens founded Dualstar in 1993, producing the twins' films as well as videos, such as 1993's Double, Double, Trouble, Toil and Trouble and 1994’s How the West Was Fun. In 1994, a series of musical mysteries titled The Adventures of Mary-Kate & Ashley was launched. It continued to air until 1997. The Olsens made their feature film debut in It Takes Two in 1995 with Steve Guttenberg and Kirstie Ally. The Olsens also launched a second video series called You're Invited to Mary-Kate & Ashley , which was updated with new episodes until the year 2000. They were guest-starring on the 1997 episode of Sister Sister. In 1998 the twins appeared on series television with another ABC sitcom, Two of a Kind, with Christopher Sieber as their characters widowed father. While the show lasted only one season, it continued to be replays on cable for several years. The year 1998 also witnessed the debut of Billboard Dad, the first of a new string of direct-to-video movies starring the Olsens. The final such film, The Challenge, debuted in 2003.