I'm guessing by business you mean gross? If so, here is my list:
1.) Avatar 2 - I don't care if you people think the first movie was average/bad. It's the highest grossing movie unadjusted for inflation. Coming off of that, it would be impossible not to be every movie in '15.
2.) Avengers 2 - The first one was the third highest grossing film of all time. And, for some reason, people really seemed to like it. This one will build off of Marvel's brilliant "Phase" plans.
3.) Star Wars VII - It's Star Wars. Long awaited, highly praised franchise, blah, blah, blah.
4.) Hunger Games Mocking Jay Part II - Jennifer Lawrence has become extremely popular just from one of these films. Imagine how popular her and the series will be after three installments of this series.
5.) Finding Dory - Finding Nemo is (I'm pretty sure) the second highest grossing film after Toy Story 3. This one will surely gross more than Finding Nemo just due to the sheer popularity of the first one and because a sequel has been long awaited. Plus, Ellen Degeneres. That is all.
All of the movies above will gross over 1 Billion (or close to, in the case of Finding Dory) dollars.
