Chart.js - Easy, object orientated client side graphs for designers and developers, http://bit.ly/Z98Jf0
I'm Using Highcharts (http://www.highcharts.com/) And i believe they are more flexible, more interactive and way more powerful. They have many functions and features to work with Take a look at their demos: http://www.highcharts.com/demo/
And here's link of my implementation on my site: http://devian.gr/highcharts.png
Also i've updated the demo of Scroll Append, check it :)
For example check: At its Pie Chart: http://www.highcharts.com/demo/pie-gradient Way more beautiful :D
Also be advised Title is missing from this page: http://www.hawkee.com/thread/103359#c103367
This looks pretty nice. I might want to give it a try here on Hawkee. We're still using the deprecated Google charts API.