Andrew Wood has just created this cool script that lets you publish applications on your Presentation Server via the "Send To" right-click menu in Windows Explorer. The first time you use it, you configure which existing published application you'll use as a template (mainly for user permissions). Then you can fly through Windows Explorer and publish all sorts of things.
I'm not sure how must use this will get publishing production applications for users. However, it's great for building out a quick test environment, or for publishing a bunch of applications for administrators.