Trivia: Moved to Los Angles at 13 to pursue acting and debuted a year later as Colleen Connelly-Carlton on The Young and the Restless. After recurring roles on How I Met Your Mother and Desperate Housewives, she joined the cast of the CW's Nikita as a budding assassin. In 2010, she appeared on the big screen in the comedies Hot Tub Time Machine and Kick-Ass. Is an accomplished tap dancer.

Trivia: A small, delicate-looking, perky actress, Thompson studied dance as a child, and was dancing professionally by age 14; she won scholarships to the Pennsylvania Ballet, American Ballet, and the San Francisco Ballet. However, she felt she was too short to become a prima ballerina and gave up dance in favor of acting. After moving to New York she appeared in some 20 Burger King TV commercials, then debuted onscreen in Jaws 3-D (1983). Shortly thereafter she got her first important role, opposite Tom Cruise in the hit All the Right Moves (1983). She is best known for her multiple roles in the three Back to the Future movies; aside from those highly successful movies, she has not gone on to appear in any hit productions. She also appeared in the TV movies Nightbreaker (1989), Montana (1990), and the PBS playhouse co-production The Wizard of Loneliness (1988).

Trivia: A reclusive character actor with an elongated, skull-like face, manic eyes and flexible facial expressions, Christopher Lloyd is best known for portraying neurotic, psychotic, or eccentric characters. He worked in summer stock as a teenager, then moved to New York. After studying with Sanford Meisner at the Neighborhood Playhouse, he debuted on Broadway in Red, White and Maddox in 1969. Lloyd went on to much success on and off Broadway; for his work in the play Kaspar (1973) he won both the Obie Award and the Drama Desk Award. His screen debut came in the hugely successful One Flew Over the Cuckoo's Nest (1975), in which he played a mental patient. He went on to appear in a number of films, but first achieved national recognition for playing the eccentric, strung out, slightly crazy cab-driver "Reverend" Jim in the TV series Taxi from 1979-83; he won two Emmy Awards for his work. He extended his fame to international proportions by playing the well-meaning, wild-haired, mad scientist Doc Brown in Back to the Future (1985) and its two sequels; this very unusual character continued the trend in Lloyd's career of portraying off-the-wall nuts and misfits, a character type he took on in a number of other films in the '80s, including The Addams Family (1991), in which he played the crazed uncle Fester. His "straight" roles have been infrequent, but include Eight Men Out (1989).