CSS3 is awesome and so are you. That's why we decided to make this little gadget so you don't even have to think about the current syntax that is, quite honestly, pretty hard to remember.
UPDATE: I guess @smashingmag found my site and tweeted about it. I am aware of several bugs, but I will be fixing them and adding things like box shadow and other CSS3 styles in the near future. If you have any CSS3 styles you'd like to see here, please let me know. You can also follow me on twitter @cgosborne.