I like Python and I like the way Django does controllers (not so much the template engine though). But I cannot use Django or any Python, Ruby or PHP setup in my current project because I'm keeping a lot of data in memory and that doesn't work with multi-process architectures.

So I'm using a very small dispatcher Servlet to pass JSON messages on to POJOS and do all the templating in the browser using jquery.

I'm bored to death (and rather annoyed) by Java so I'm always looking for alternatives that support my architecture.