Another possibility is Science on a Sphere (projected on the sphere rather than an active display):
I see they have one in at the McWane Science Center in Birmingham, AL -- perhaps a few hours away, by car, from you in Huntsville.
You might need a slightly bigger office to fit this one but, the globe that you want is hanging in the Tokyo Science museum: http://tokyotek.com/geo-cosmos-gigantic-globe-oled-display-video/
Watching realtime weather patterns on it and day and night images is pretty cool.
On the perhaps slightly positive side, there is a Science on a Sphere system at McWane Science Center in Birmingham, Alabama (http://www.mcwane.org/ ). This might be sufficiently close to you that you could go and see what future generations might have in a smaller and less expensive form.
Also, my pessimistic view need not correspond to reality.
Replay available now: A handful of emerging network technologies are competing to be the preferred wide-area connection for the Internet of Things. All claim lower costs and power use than cellular but none have wide deployment yet. Listen in as proponents of leading contenders make their case to be the metro or national IoT network of the future. Rick Merritt, EE Times Silicon Valley Bureau Chief, moderators this discussion. Join in and ask his guests questions.