For this list, I'll be listing my personal top 10 favorite movie sagas of all time. Remember that this is my opinion and probably not yours. So please respect that. Enjoy!
http://www.ranker.com/list/top-10-favorite-movie-sagas-of-all-time/fanboy,
Austin Powers: International Man of Mystery
Back to the Future
Goldfinger
Harry Potter and the Chamber of Secrets
Pirates of the Caribbean: Dead Man's Chest
Indiana Jones and the Raiders of the Lost Ark
Star Trek II: The Wrath of Khan
Star Wars Episode VI: Return of the Jedi
The Lord of the Rings: The Fellowship of the Ring
The Hunger Games