I asked myself this very question, only weeks ago. I searched the internet day and night until I found the best way to download movies to my iPhone!
There are actually iPhone download programs available that, for a small one time fee, will give you access to UNLIMITED iPhone movies, TV shows, music, sports, games, and other programs for your phone.
With these iPhone download programs you get access to literally millions of high quality movies for your phone, and you don't have to pay per download either. What's great is that the movies download extremely fast and it's easy to find rare old movies, all the way to brand new releases. New media files are added daily so there's always something new to watch.
The benefits of using one of these programs is that they are extremely fast, and completely private, secure, and spyware/adware free.
Another great thing is that the iPhone download software does all the work for you, and if you know how to search, then you'll be able to easily find any movie you are looking for. It's so simple that even my sister figured out how to download and transfer movies over to her phone (she's not that technically gifted if you know what I mean).
Also included with most of these services is a program that will allow you to download and transfer any DVD over to your phone. This is great if you have home movies or even an old DVD that you'd like to take around with you.
I've already purchased and test the 4 best iPhone download programs: