The Mary Tyler Moore show
was groundbreaking in the 1970's.  At the height of the women's liberation movement, the show was the first to feature single, career minded women in lead roles.  The cast reunited in acting roles for the first time in 40 years for the show "Hot in Cleveland."  Check out the video of Katie Couric interviewing the cast from the set.

(Photo by Kevin Winter/Getty Images)

In addition to groundbreaking, the show won 29 Emmy Awards and a Peabody.  It also launched several spin-offs including; Rhoda, Lou Grant and Phyllis and started careers for Gavin MacLeod and Cloris Leachman.

The leading ladies from the show, Mary Tyler Moore, Betty White, Valerie Harper, Cloris Leachman and Georgia Engel — are all acting together again for the first time since the show’s finale in 1977.  They all sat down with ABC News' Katie Couric to talk about the show's popularity, their characters and 40 years later.

The show’s writing was groundbreaking for its time, highlighting the fierce friendships and lives of five best friends, with characters that were funny and interesting, but also imperfect. Each role had something that attracted the audience.