Pushing Java back into the background for web applications
Actually, I like PHP a lot for smaller web apps that don't have to scale, etc. I installed SugarCRM (a CRM system written in PHP) for a customer last year, and liked it.
With light weight communication there is no reason why the presentation for web application can not be done lightly (e.g., CherryPy for Python developers, Rails for Ruby developers, PHP, etc.) with back-end processes written in heavier weight languages like Java or Common Lisp.