The '70s had Cheryl Tiegs in a mesh bathing suit. The '80s had Christie Brinkley in . . . well, everything. Christie actually scored her first Sports Illustrated cover back in 1979, but that only primed the '80s for college dorms wallpapered in the poster form of Christie (not to mention two more SI covers). And, of course, Christie was perfectly cast as Chevy Chase's skinny dipping lust object in National Lampoon's Vacation (1983). She reprised the role in Vegas Vacation (1997), while her modeling career still has her providing masturbatory fodder for new generations.