Some of you have probably noticed that we've added a new tool to your Google Maps API toolbox, the GPolygon. Just think of all the colorful triangles, octagons, hendecagons, icosagons, etc. that you'll be able to overlay on your map. I'll be really impressed if someone is able to build a googolgon, a polygon with 10100 sides.
More details about the GPolygon class can be found in the Maps API reference.
