I thought you guys might be interested in a blog post I put up last week on creating a portable productivity "cockpit"...
http://unformation.net/2010/09/the-cockpit/
The basic idea is that Omnifocus isn't just capable of handling tasks, it's able to handle many other kinds of "verbs" and can be a a kind of nexus for a many aspects of someone's workflow.
For example, I use it alongside Dropbox text editors to track projects; knowing I can pick up those files on my Mac without worrying about manual syncing. Images / mindmaps that I can generate on the iPad; all appear in some way in Omnifocus.
It'd be sweet to get your feedback!