MOST MEMORABLE MOVIE ROLE(S): The hero’s pretty elementary-school classmate in 1992’s Sidekicks
THE INTEL: As the ridiculously winsome Winnie Cooper on the long-running sitcom The Wonder Years, McKellar was the not-so-obscure object of desire of at least one generation of young American males. After leaving the show in 1993, McKellar enrolled at UCLA, where she earned a B.S., summa cum laude, in math. (As an undergrad, she co-authored a paper titled “Percolation and Gibbs states multiplicity for ferromagnetic Ashkin-Teller models on Z2”). She is also the author of several bestselling books that encourage teenage girls to embrace math and the sciences.
CELEBRITY-BRAINIAC RATING, ON A “1” (SNOOKI) to “10” (COLLEGE PROFESSOR) SCALE: 8