I just put up a pub/sub plugin on GitHub. The code is at:  http://github.com/chakrit/jquery-xpubsub alongs with a README and 2 demo pages.

It provides $.publish and $.subscribe and also a $.connect, for a quick glance-over-the-code of what it can do for you please see  http://github.com/chakrit/jquery-xpubsub/blob/master/test-mvc.js ..

If you guys have a few minutes, I'd love your feedback.

Thanks!