Danica McKellar (IMDb) (Wikipedia)
Danica isn't like a lot of Hollywood child stars. She stopped acting for a few years and got a real college education. I don't mean a drama major or anything wimpy like that; Danica's a mathematician, graduating summa cum laude from UCLA. She took a couple years off after college, and started acting again about 4 years ago, doing a bunch of filler roles - guest star of the week, video game voices, and the like.