This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
JPython is the old name for what is now known as Jython. It is a dialect of Python which allows you to use Java classes from an object oriented scripting language. You can also embed Jython into a Java program. There's more here. A couple of book reviews here.