The Interestings by Meg Wolitzer

I waited a long time to get this book from the Library and the wait was well worth it! The book starts at a summer camp where a group of artsy teens meet and forge life-long friendships.  The "main" character, Jules (she was Julie before her new friends dubbed her with this name), is the outcast, a frizzy haired girl from the suburbs, not like the other privileged Manhattanites who take her under their wing. She is not sure why.
The story jumps around and covers about 40 years in the life of these characters. There are marriages, babies, tragic events and lots of conversations.
One of the characters, Ethan Figman, was a genius at animation at camp and  he ends up creating a famous television show. Another is Cathy Kiplinger, a dancer who doesn't quite have the body for dance and ends up a successful business woman. Jonah Bay, son of a famous folk singer gets involved with the Moonies for a while and his friends save him. The other two characters are siblings, Ash and Goodman Wolf. Ash (the sister) loves theater and her brother loves trouble.
I won't give anything away about the plot, but will conclude by saying that this is a very enjoyable and thoughtful book that I highly recommend.