If you make a wrong turn on a website you will get to a page called 404. They’re usually very dull but you can find some great playful ideas.
We felt that it’s an opportunity for us to have some fun.
I came across Facebook’s broken thumb recently and thought that it was a great idea.
A few great examples
Heinz has a good balance of useful navigation and a light hearted approach.
A bit of nostalgia from the BBC
A very elegant design from Huwshimi.
Gatecrash a private Firefox monster party.