The one I use for thingist: http://thingist.com/blahblahblah

And also 500: http://thingist.com/errordocs/500error.html

The site is tiny, which let's me be a little bit sillier than normal. Personally I think playfulness is the core of what it means to be a hacker, so I love this type of stuff :)

My favorite 404: http://www.rathergood.com/404

Sound, plus it's annoying as hell? I can see why.

Interestingly fab404's 404 page itself is not at all great. http://fab404.com/404.html

This one is appropriate for HN: http://fab404.com/magnetize/

except it implies that a 404 occurs when something goes wrong and when you can't type. A 404 would be the superset of those two, not the intersection

Not every typo results in a 404 and not something broke doesn't always mean a 404. On the other hand, its not the intersection of these two, also.

404 should be placed above the diagram if you ask me.

I've always been a fan of Good.is' - http://www.good.is/43253453rtgesrgs4

Bonobos also has a good one: http://bonobos.cachefly.net/fail.html

Small shameless plug for our own attempt at the "personal" 404 page: http://www.ties.com/fgswgdfjgjah ( flash required to see video, sorry )

Funny, but sound on a 404 page? That could get annoying fast.

Hitting 404 pages often GET annoying fast.