Inspired by my friend Chiuto, I have developed a tool (called Siri can tell) that can generate a screen shot of Siri with my tailor-made conversation. The technology at the back end is canvas function by HTML5. By using canvas, you can generate a image at client side on fly. It's pretty cool huh. So, please try the tool at
http://siri.we-love-programming.com
Also, feel free to give me your comment. Thanks.
If you would like to start building HTML5 canvas application too, read this: