There's a nice set of sample documents at
http://www.omnigroup.com/application...tliner/extras/
I use it for taking notes on books that I read or talks that I attend, checklists for things I want to do, etc. I also use OmniFocus, but some things I'd rather just have a single action in OmniFocus linked to an OmniOutliner template. For example, I don't really need to keep track in OmniFocus of whether or not I've reset all the clocks when Daylight Savings Time starts or ends; I just have an action that tells me to run the appropriate checklist.
When I got my first OmniOutliner license, Pages didn't exist, and Word was a steaming pile. Fast-forward almost a decade, and now Pages is on the scene, Word is an even bigger steaming pile, and OmniOutliner still satisfies most of my document creation needs :-)