Who's Dude Mladen Sekulovich?
Karl Malden (his acting name--mother was Czech, dad was Serbian), an acter who was in 50 movies in 50 yrs. American Express Travelers Cheques commercials who opened all the commercials with the question, "Do you know me?" those ran for some 13 yrs or so.
Malden won the Oscar for Best Supporting Actor as "Mitch" in A Streetcar Named Desire (1951). Played along side George C. Scott in Patton.