Global Bathymetry and Global Topography
Average Daytime Surface Temperature over Blue Marble Bathymetry
Atlantic Hurricane Paths (via NOAA, not included in WMS) in the context of Population Density and Global Bathymetry
It's so nice to work with a WMS that functions, let alone provides really interesting and beautiful data. You can browse the full set of layers in this feed at NASA's previewer page. For more information on pooling data like this with your organization's business/operational data, in the context of time and charting visualizations, drop us a line!
And here is the path directly to the feed's getCapabilities (which you can paste into the Ad-Hoc feeds menu in VFX.):