That 70's Show! - Who's Brooke Shields?
In the episode "Sweet Lady" Mrs. Foreman & Jackie go to the TV station to meet Christie St. George. When talking to the receptionist, Jackie says "I'm supposed to be her co-star" (or something similar). The receptionist replies "And I'm supposed to be Brooke Shields." Problem is, when this show was supposed to take place, Brooke was a virtually unknown 13-14 year old...she didn't hit it big until Blue Lagoon came out in 1980.