Google released two new videos by stars of the Google Maps API world.
First up, John Coryat present his latest, Simulating Markers with Tile Layers. A follow-up to Creating Custom Maps, this video presents advanced techniques in creating clickable tile layers. The techniques he describes are actually similar to those used by Google, for instance for rendering KML or Fusion Table Layers. This video talks about how to roll your own.
In second video, Chad Killingsworth video is on Using the Google Maps API with the Google Closure Compiler.