Velocity NY is Coming!

O'Reilly's Velocity Conference is quickly approaching -- it's September 15-17 in beautiful New York. As a follow up to last month's post, I wanted to make sure people knew I had 3 more tickets left to give away to this epic front-end performance conference!
In my last post, I asked for links to awesome performance-related articles. I learned a ton and I hope you did too! This time I'm looking for something a bit more interactive! In the comments below, please post a link to an awesome demo. Whether it's a CSS animation or a canvas/WebGL masterpiece, I want to see something epic!
If you entered via the previous post, your entry will be put in the drawing for subsequent ticket giveaways. If you don't want to chance it and want to get a 20% off discount to the conference, use code AFF20 after clicking this link!
![CSS @supports]()
Feature detection via JavaScript is a client side best practice and for all the right reasons, but unfortunately that same functionality hasn't been available within CSS. What we end up doing is repeating the same properties multiple times with each browser prefix. Yuck. Another thing we...
![9 Mind-Blowing Canvas Demos]()
The <canvas> element has been a revelation for the visual experts among our ranks. Canvas provides the means for incredible and efficient animations with the added bonus of no Flash; these developers can flash their awesome JavaScript skills instead. Here are nine unbelievable canvas demos that...
![JavaScript Copy to Clipboard]()
"Copy to clipboard" functionality is something we all use dozens of times daily but the client side API around it has always been lacking; some older APIs and browser implementations required a scary "are you sure?"-style dialog before the content would be copied to clipboard -- not great for...
![Create a Simple Slideshow Using MooTools, Part IV: Thumbnails and Captions]()
This demo blew my mind. Seeing the solar system in action with nothing but CSS animations and a sprinkle of javascript:
http://codepen.io/juliangarnier/pen/idhuG
Cool collection of patterns generated using only CSS:
http://lea.verou.me/css3patterns/#
Zooming in and out on this periodic table while switching between table, helix, sphere and grid provides such an engaging experience for the user. You may even discover elements you hadn’t heard of by toggling between the different views.
http://mrdoob.github.io/three.js/examples/css3d_periodictable.html
Mozilla’s work with Epic in porting the Unreal 3 engine to JavaScript always impressed me. Having a hard time finding the actual Citadel demo on my phone but there’s a good review with screenshots here: http://www.webgl.com/2013/05/webgl-game-demo-unreal-engine-3-epic-citadel/