How pretty or cool is the not found page of your blog / site? I'm ashamed of the layout of 404 pages of my blogs: they are boring normal. I wanted some funny image, as the several images collected by 404lounge.net. The gallery has almost four hundred screenshots the most funkiest, freakiest and funniest examples 404 pages.That's just the begining.

The 404 Research Lab has a huge collection of links to 404 pages divided by category and themes. There are no screenshots, but they worth the visit, at least the categories I checked. They also have: a do-it-yourself 404 tutorial, with good reasons to build it and step by step with the technical information; pages with tips to fix your pages with errors;news; and the history of 404.