EagleFiler stores your files in standard formats, and the iPhone can read most of them. There are a variety of applications in the App Store that let you transfer files between a Mac and an iPhone and view them on the iPhone:

• Air Sharing (Recommended. It has a great interface, supports Web archives, and EagleFiler can directly open libraries that are stored on the phone.)
• DataCase
• Files
• FileMagnet
• MobileFinder

These also work with the iPod touch, of course.