Isn't it a better idea to post pictures of NTs in their 'element', with a range of expression rather than a single image?
Example (and we all agree this guy is an NT right?):
I guessed ENTP on the great Richard Feynman. Those are excellent images. Look at the eyes - not sad INTP eyes (as ShortnSweet pointed out about the INTPs) but rather gentle yet inquisitive. And I also thought - who else but an extravert would go gallivanting around the world the way he did? And that Tanu Tuva visit attempt was just ridiculous and crazy - something an ENTP would try.
In Feynman's own words, "There wasn't anything to do there". Bored, he indulged his curiosity by learning to pick the combination locks on cabinets and desks used to secure papers. Feynman played many jokes on colleagues. In one case he found the combination to a locked filing cabinet by trying the numbers a physicist would use (it proved to be 27–18–28 after the base of natural logarithms, e = 2.71828...), and found that the three filing cabinets where a colleague kept a set of atomic bomb research notes all had the same combination.
He is, I mean she is, well... it is an INTJ, and what a lovely cotton bunnytail broach.
That's Allen Gregory. A cartoon image is going to be difficult to prove a case with. I used it as an example of a certain type of eyes. INTP and sad eyes may be a stereotype, and I didn't want to go there. As for myself, as an INTP, I don't have sad eyes, I have Allen Gregory eyes. (Sans enormous glasses.) I have subtracted the INTP stereotype and given those eyes a real name. It's never sadness anyway, but more like the penetrating insight of a centuries old wisdom.
They are the eyes of a personality with a description not usually found in the typology literature. When I study abstruse theories, such as QM and the like, I don't just see the math, I see philosophy. I see the world in a profoundly different light. The wisdom is derived from knowing that there are many facets involved in seeing the universe as it is, and not just a single perspective.
"I absorb energy like a sponge everywhere I go. It allows me to see the world and my purpose in it." Zak Bagans, Ghost Adventures (INFJ)
INTJ's are known for their "death glare." It's basically an impassive stare that has no malintent, but it is perceived by some to be menacing. I can feel myself doing this in lecture when it is particularly boring, or an xNFP says something irrational/that was meant to be funny, and sometimes the instructor notices because it's probably like I'm staring right through them.
Hopkins playing Hannibal Lecter hit it on the head when he would give Clarisse his spiels, and when he was locked up on that dolly thing while being transported. Let me see if I can source a pic from INTJf