It is so well-known that I don't believe I'll need to give it a summary.
I love the dances, especially All That Jazz; and I like Richard Gere, his acting, his dancing, his presence in the film itself makes a good reason for watching. The only point is that I don't buy the story. If people care so much about fame, I see no future. However, it seemed to me that in the end both dancer girls had no other options but to stay in the pursuit of fame in the show business.
So far, only this and Showgirl can make me feel like having Jazz. I'd say it is a good one (I mean the dances).