Couldn’t get them all #CAANT
Nerdfighter Benedict? Or just failed Vulcan?
As far as I can tell, there are eight possibilities here. (I’ve spent a fair bit of time thinking about this.)
1. Benedict Cumberbatch is a hardcore nerdfighter and when Martin Freeman threw up a gang sign, Cumberbatch was like, “I have one of those.”
2. Cumberbatch, who obviously has a relationship with Star Trek, just naturally changed the Vulcan sign (pulling in the thumbs, turning the palms inward, crossing the arms) in precisely the same way that I happened to change the Vulcan sign when I first made the nerdfighter sign in the halcyon days of 2007.
3. One of the interns on set who has gained the trust of Benedict Cumberbatch was like, “If you do your hands like this, the Internet will get really excited.” And so he did.
4. BBC, in their infinite wisdom, staged the entire photo and Cumberbatch was taught the nerdfighter sign (I MEAN LOOK AT THE PERFECTION OF HIS NERDFIGHTER SIGN! He seems so comfortable and confident in it, almost as if it is muscle memory, almost as if he has flashed it to his laptop screen on hundreds of occasions in the past, but I digress) and this photograph was staged to get people psyched for Sherlock, although what tiny segment of nerdfighteria is not already psyched for Sherlock? Also, if this is the case, who is Martin Freeman trying to advertise to? Residents of the West Side?
5. Benedict Cumberbatch has a relative or a friend who is a nerdfighter and so he is passingly familiar with nerdfighteria and liked what he has seen and wanted to make us all very happy.
6. The nerdfighter sign also happens to be the hand sign of some obscure English gang with which I am unfamiliar called like The East London Wanderers or The Slightly Intimidating Liverpudlians or whatever.
7. Nerdfighteria actually figures in the plot of the new season of Sherlock. Perhaps a nerdfighter has been (wrongly no doubt!) accused of a murder.
8. Benedict Cumberbatch was playing some kind of British version of Rock Paper Scissors against two invisible opponents, and he went double scissors (as any smart person would).

I have to assume that by “American Icon” you mean an icon of American culture because:
Superman, tho he protects us in America, is not an American.
He was born Kal-El on the planet Krypton. He came to Earth in a spaceship as his homeland was being destroyed. Upon landing in Kansas, illegally by the way, he was taken in by Jonathan and Martha Kent. Accounts differ as to whether it was a formal adoption or if they just took him in, tho without a birth certificate, how legal could it be?
In addition to being an illegal alien, he’s actually an alien. Not just a refugee drifting toward American soil on a raft, he actually flew thru space in a spaceship.
Even this current depiction of the Man of Steel is not American. He’s a British actor working in the US and Canada on an O2 Visa.
But other than that, spot on
(Source: catbushandludicrous, via fishingboatproceeds)