Here is a simple, nice way of representing 404 error page. It is designed in the form of a blackboard with 404 written in a scratchy way and has clean fonts being used to write the rest of the content. The other features it provides are:
- Validate xhtml/css 1.0
- PNG Fix for IE6
- PSD files included
- Compatibility (IE 6, IE 7 , IE 8, Firefox, Opera, Safari, Chrome)
- Help file included
- Links to others pages of the site
- Special Links for social networking sites