Slippy Maps: Naval Research Lab's DMap

If you're into watching the "Slippy Map" Wars, here's a shot across the bow that's been around for a while. The Naval Research Lab's DMAP. It has thick, thin, and PDA clients that rely on OGC and proprietary web mapping services. Pretty neat. I saw a Google Maps implementation today, so I thought I would toss it out for you all to take a look at and review/use. Of note, should be that the DMAP team claims that they have compiled the largest collection of geospatial data on the Internet to date. I wonder if they have seen Mapdex.org?