Check out this great gallery of websites featuring the 3D functionality of HTML5. If this one doesn’t make you laugh I don’t know what will. I have often linked to galleries in the past that feature websites created with Flash, CSS3, or any number of other technologies, because I think there’s value in observing what people are making on the cutting edge. Not only can web developers and graphic designers be inspired to go further in their own creative process, there’s a good chance that you’ll see something (especially when it comes to web programming) that you didn’t even imagine as possible beforehand. There’s no better recipe for inspiration than that, I think.
While we are on the subject of HTML5 here is the most interesting example of HTLM5 video I have yet seen.