SVG.org points to an SVG viewer that runs on the Sony PSP. I haven't got the hardware to try it out, but it sounds interesting. I suppose it's just another platform really, like any cell phone or PDA, but somehow the video game angle makes it sound more important.

If you'd like to try it, the authour says it's built with the expat library. I tried out expat myself not that long ago (more on this coming some day). It's really amazing how easy expat is to use once you actually get started with it. You can download the viewer itself and try it out yourself from here, but note the updated instructions.