This is an issue some men refuse to understand or even acknowledge. While it's true we objectify men to some degree as well (who wants to see a beer gut?), it rarely stands in the way of their success. One expects a leading lady to be beautiful, but directors aren't so discriminating about their leading men. It's why we get old men like Harrison Ford paired with lovely young things like Anne Heche ("Six Days, Seven Nights").
And that's just Hollywood. It's prevalent in other arenas as well. Compare the Dixie Chicks to Garth Brooks, or Shania Twain to Lyle Lovett. You see it in politics all the time -- remember "Cankles"?
Usually though, it's much more subtle. There are far more homely men in positions of power than homely women. But hey, women are just being difficult and unrealistic when they bring this up, aren't they? They need to get over themselves, like black people and the "discrimination" they think they face. It's all fake.