For the first time, another show's cast assumed hosting duties for the interstitials in place of the stars of "Perfect Strangers". Dave Coulier, John Stamos and Mary-Kate and Ashley Olsen (alternating as Michelle Tanner) all appeared on the set of "Full House" introducing the season and series premieres that night. As they began their first segment, the "TGIF" name was officially introduced, in which its meaning, "Thank Goodness It's Funny", was re-emphasized from the theme lyrics. Coulier and Stamos also announced that a new policy, in which stars from the other three "TGIF" programs would rotate hosting responsibilities along with them on a week-to-week basis, would begin. Rotating with "Full House" that season were the casts of new arrival "Family Matters", "Perfect Strangers" (whose first night its cast members hosted the Friday lineup under the "TGIF" banner occurred on October 13, 1989) and "Just the Ten of Us". On the premiere night of "TGIF", the new (and ultimately short-lived) comedy "Free Spirit" aired as a preview telecast at 9:30 p.m. Eastern Time, with "Just the Ten of Us" reclaiming its time slot the following week.