A woman working for an ad agency is tasked with finding a good slogan for running shoes (à la “Nike”). She struggles at first and then has a kind of epiphany thanks to particular events / observations, and she finds a great slogan for the brand.
If I recall correctly, there are some points around the fact that the running woman in the ad is “natural”, no make-up, can be herself.
Helen Hunt and Mel Gibson work on a Nike ad campaign for women, and Nike likes their ideas. Quote from the movie’s above Wikipedia page:
" However, he steals Darcy’s idea for a new Nikead campaign aimed at women, though he later regrets his actions, especially as it leads to Dan firing Darcy."
I’m watching too many movies and TV series so I’m mixing things up… I really thought it was a very recent movie, with a woman pitching the idea ; which is why I never thought of “What Women Want”.