found this Nelson desk  

Yeah -- smaller
maybe. And in the ultra-rare blue coloring.
What's that little question mark in the middle ?

What? Blue? Are you seeing...
What? Blue? Are you seeing what I am seeing? The desk isn't blue!
I'm just wondering if my desk is George Nelson. Thanks SDR!

?
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http://www.telegraph.co.uk/news/uknews/1580029/Too-much-Viagra-leaves-ma...

I am guessing that SDR has a...
I am guessing that SDR has a broken image icon of some kind, although the desk image has been appearing fine on my browser.

Welcome back, Jake...
No markings anywhere I take it? Looks legit either way. It's not the Basic Cabinet line though, which I think you're used to seeing. Squared pulls and frame mean it's an Executive Office Group piece. Cool find.

Leg
The legs under the drawers don't look right. I've never seen that config before.

Its the leg under the drawer...
Its the leg under the drawer that throws me off too.

Anyone else have any idea?
Anyone else have any idea?

Not gonna get much of a guess with that photo...
Need closeups of the leg and underside of the cabinet. If this is one you haven't seen in person then there's no way of knowing what the deal with it is. It could be a component of an "L" that was taken apart/reconfigured or something similar. Probably a DIY but that photo isn't going to yield enough evidence to tell.

more
more

Bah...
Looks like your two closeup shots aren't posting for some reason. Post the flickr link or whatever...
It is odd the more I look at it, and not just the leg. These versions normally have a space between the desktop and cabinet as well.
The cabinets look right. The metal components look legit. It's just looks like someone at Herman Miller or at home got creative. Weird.

here's another one
I came across this one that is similar... sorry i can't bring more to the table i just thought i'd share what I saw.
http://www.ebay.com/itm/George-Nelson-Desk-Herman-Miller-Mid-Century-Mod...

Man it's so close. But that...
Man it's so close. But that leg on mine sure is skinner from what I can tell. Are the pulls slightly off? Sure seems it could go either way. But probably not Nelson ...

wow
It doesn't look recent, so this would have been a contemporary copy? Basically? That seems odd. I'd say "Nelson"