Yes it's a lot of maps
But I posted everything that I found that works, and some are much more interesting than others. My choices are:
In the US. NEXRAD and/or nowCOAST for the weather radar. If you have satellite images as maps then Hydrography Data, Transportation, and US National Map Gazetteer are useful overlays.
In Europe. The Norway Met office. If you are in the Netherlands, the weather radar service.
The nighttime lights map is useless, but a cool thing to show your friends.
Regarding so many maps, I have a request. The name of the map is whatever the WMS server provides, but sometimes that is kind of meaningless to me, and in at least one case (Norway Met office) it's blank. I would like to be bale to assign my own name instead. It would make it much easier to remember which map is which.