Inkscape is such a great tool. I loved it before getting to know SVG, on its merit as an editor alone; but after digging into the SVG format because of web-related stuff, I appreciate inkscape so much more. It exposes many of the more technical aspects of SVG without making things too complicated.
It's nice to see all the new features that are being added; they really feel like the project might be going from niche tool for SVG fanboys to actually usable by a wide variety of graphics people.
So far I've used inkscape for almost anything, from animated web graphics to 3D-Printing (OpenSCAD lets you import SVG files directly and extrude them into 3D). I'd almost like to call it "the blender of 2D"