There are two sure-fire methods of distinguishing between the Pod People and humans.  The first is that they are simply too perfect; no moles, freckles, birthmarks or body hair whatsoever.  And the second tell?  Bad Canadian haircuts.

It just occurred to me that this model might have copious amounts of tattoo ink on his arms, in which case the overt use of the air brush tool was unavoidable.  It then occurred to me that there are likely plenty of non-tattooed models it might have been more wise to hire for this shoot.  And now it occurs to me that if this guy can get paid to be a model, then why am I not writing paid speeches for Mitt Romney?!

Thanks Micheal. You can see the original on the IMDB site