Sun’s hiring of two of the biggest names in Python-land – Ted Leung and Jython’s Frank Wierzbicki – and my experiments with Django – has encouraged me to dip my toes in Jython. Here’s a few decent starting points:

IBM developerWorks: Charming Jython

IBM developerWorks: alt.lang.jre: Get to know Jython

ONJava: Tips for Scripting Java with Jython

JythonWiki: Learning Jython (just starting this one, but this looks most comprehensive)

And of course the home page: The Jython Project