Doesn't This Guy Ever Smile?
No, I did not take this. Yes, I stole it from here: http://visualsciencelab.blogspot.com/2012/04/i-do-my-own-stunts.html
Buried in this gentleman's curriculum vitae is a stint teaching at the "University level." His look reminds me of many of my engineering professors I had back in my younger days. The kind that used to give me no-nonsense academic hell.
(I just couldn't resist)