Where can I download movies for free in iphone format?

I was hoping to find Disney's "The Little Mermaid" Part 1. I've looked before and most links don't have the full movie, or stop in the middle and refuse to play the rest. I have tried using a converter before and it just doesn't work. Perhaps you could send me a link to a website with movies that give you the option to download in.mp4 format already, or give me some tips to help.

Hi, I can recommend that you convert your movie (actually any video that you have) to the format compatible with your iPhone. You can use Free Video to iPhone Converter:
http://www.dvdvideosoft.com/products/dvd/Free-Video-to-iPhone-Converter.htm
So, you can download any video and then you will adjust it for your iPhone with this converter.
As for downloader, it depends from what website you need to download. Different programs download from different websites.