Apple's MobileMe service provides a great way of not only backing up files, but also ensuring that you can access your files from a range of devices. The MobileMe Gallery app for iPhone and iPad enables you to access your published photo albums and video files from your idevice.
As you view your files, they are cached so in future future you will be able to access previously viewed contents without the need for an internet connection. You can access both hidden and password protected albums, and sharing links can be easily created.
Navigating through your images is a familiar experience - pinch to zoom, flick to move back and forth and rotate to switch between portrait and landscape mode. You can also access the MobileMe galleries of your friends, regardless of whether or not you have a MobileMe subscription.
If you are not a MobileMe member, you can learn more about MobileMe and sign up for a free 60-day trial at http://www.apple.com/mobileme.
Simple and effective, MobileMe Gallery provides easy access to your files without an overwhelming array of features.