The CSS3 development is at a point where we should be careful not to repeat the eye-huring things we did to Flash.<p>All these "amazing" examples of what CSS3 can do are... well, amazing, considerings the limitations of CSS2. But also dangerous, considering "flash based web sites".<p>Remember that a user may want to see the same page several times. Copy-paste parts of it. Have a closer look at a specific item on the page. Cares for the content, not the weird movements it is doing.
One of these days I'm going to pull a metric out of my tuccus explaining to anyone who'll listen that the use of slides for anything other than a presentation [slide deck] is very annoying to the user.