I've seen them in commercials and in documentaries. Can't remember any specifics, but they were quick and dirty jobs just using the default figures. But it has been used.

Now fred, you'd be surprised at the power to create and rig figures in poser. If you're ambitious, you're always going to need a modeling app and Blender will always be that for me. But for scene setups and character creation, Poser is awesome.

I render in Povray by the way.