This week's giveaway is in the EJB and other Java EE Technologies forum. We're giving away four copies of EJB 3 in Action and have Debu Panda, Reza Rahman, Ryan Cuprak, and Michael Remijan on-line! See this thread for details.
If your JSP is already running in a servlet container, you can always contact it using Java's built-in networking and request some output. Or are you looking for a way to run a JSP without a servlet container?