Hey - I just stumbled across this thread. Chris already mentioned, but we were the ones that created that Volkswagen commercial that was initially referenced in this thread. I'd be glad to help in any way that I can on what we've learned about SketchUp in a motion graphics workflow.

For the Volkswagen commercial, we used SketchUp as a central planning and final graphics tool, but we also mashed together a number of other programs including:

-Adobe Illustrator
-Adobe Photoshop
-Adobe AfterEffects
-Video footage
-Still photography
-All edited with Final Cut Pro (Premiere would be fine for PC users)

So while SketchUp would not readily be considered a fit for high-end motion graphics, I do believe that it can provide a fresh aesthetic, and when combined with other programs, one can work around the flickering from SketchUp Animation renders.

Anyhow, we've since completed a few other animations, films, and motion graphics projects. My favorite one that we most recently finished (although pretty simple) was for Google.org: http://www.youtube.com/watch?v=x0FsSN7YWHc&feature=channel_page. Be sure to watch in high quality.

Let me know what specs, if any, would be most helpful to share.