J-P Metsavainio (Astro Anarchy) of Finland has created wonderful 3-D images of nebulae and other celestial objects. Here’s a gallery of them : New Dimension: Nebulas Are Even More Amazing in 3-D -Wired Science/Wired.com.

And he has converted some to animations like this tour of the Rosette Nebula:

And the IC 410 emission nebula: