Detailed inforamtion on my blog: http://greenido.wordpress.com/tag/webworker/
It's a set of examples I've created to show the power of web workers in short/simple way. Please feel free to let me know if you have some other good/simple examples and I'll be happy to add them to this collection.
In case you find some bug and/or have suggestions - please feel free to ping me on +GreenIdo or @greenido Be strong.