Then: On 'Head of the Class,' Kimberly Russell played Sarah Nevins, who may not have been the smartest among the geniuses, but was probably the nicest and most socially well-adjusted. The show was Russell's first acting credit, and it helped her snag other high profile roles during that time period, such as Bill Cosby's eldest daughter in the notoriously awful 'Ghost Dad.' She also dated a pre-fame George Clooney for three years in the '90s.

Now: The 47-year old had a small part in the movie 'Precious,' which was her first role in seven years. Oh well, she'll always have Clooney. (And 'Ghost Dad!')