Though they costarred in 1989's Back to the Future Part II and 1990's Part III, Elisabeth Shue (who played Marty McFly's girlfriend, Jennifer) and Lea Thompson (who played Marty's mom, Lorraine) appeared together in only one scene. So it came as a rare treat for them to reunite for a November episode of Shue's CSI, in which Thompson guest stars as an investigator who is looking into a misconduct claim against Greg (Eric Szmanda). "We both had to sign a bunch of Back to the Future Part II posters for the crew," Thompson says. "A lot of people, including Eric, were totally geeking out."
Shue and Thompson also recalled their big breaks in the early '80s as Burger King commercial spokesgirls. "There is one Christmas commercial you can see on YouTube of us singing 'Have Yourself a Merry Little Christmas' with Sarah Michelle Gellar," Shue says.
In the season's 10th episode, Shue's Finlay will be at the center of another wild adventure when she, Sara (Jorja Fox) and Morgan (Elisabeth Harnois) head out for what executive producer Carol Mendelsohn calls "a fun spa weekend that turns tense, scary and violent." Says Shue, "It's our Girls Gone Wild-Hangover-Road Trip episode. And I heard we'll be singing karaoke."