This comes from the AV Club’s Random Roles interview.  There Weller discusses the meaning behind the character’s name he plays in Star Trek: Into Darkness:

“Well, first of all, I love the two names, because in my Ph.D studies in Italian Renaissance art history—my minor is classical art— Alexander is a seminal general, diplomat, ambassador of the Western world, and Marcus, I guess, comes from Mark Antony. Those are two classical statuaries of antique and modern history.”

Now I know why he hosted Engineering an Empire.