From "aha!" moments to "teachable" moments, in 25 years "The Oprah Winfrey Show" has not just become a part of our popular vernacular, it's shaped our culture. Whether you've tuned in each weekday afternoon or preferred to tune her out, "Lady O" has left her mark.

Here's our list of the top five ways "Oprah" has changed the way we live.

Weighty issues

Over the years, Oprah has chronicled every step of her personal weight struggles. Remember the red wagon full of fat she wheeled onstage?

From fasting and fad diets to embracing exercise and lifelong lifestyle changes, Oprah's candidness about issues surrounding weight created a cultural dialog that got us all talking about "living our best life." With countless health tips from Dr. Oz and Bob Greene's frequent weight loss and diet suggestions, "Oprah" has served as the personal training team for legions of followers....