Humphrey Bogart.
According to Anastaseon’s site, I get Johann Cruyff, Rocky Marciano, Kofi Annan, and Viggo Mortensen.
I guess that sort of leaves me with Viggo as he’s the only person within 20 years of my age.
Uh, you want to be played by a lifeless decaying body? Ewwww Zombie Alert.
Jim
They could digitize him. 
I never saw the resemblance between Bob Denver and myself, but some people at college called me Gilligan, while an usher at Cleveland Stadium during my time as a vendor there referred to me as “Beatnik” because my facial hair reminded him of the goatee sported by Maynard G. Krebs.
More recently, I’ve been told I look like Chef Paul Prudhomme,, even though the only real similarities I see between him and me are the beard and girth. Prudhomme looks uncannily like Dom DeLuise, but that comic is older than my father. Hmmm, Dom’s son Peter is only seven years younger than I am, and could look like me with the right makeup. However, my hairline (although I’m not a redhead) is more reminiscent of Ron Howard’s.
If a snapshot of me is ever posted on the web, I’ll link to the picture so you can see how accurate these assessments are. I don’t know if I have an “exact double”, but there is a guy in New York who comes closer to fitting that description than anyone else I’ve seen. I only know of him, however, because he was in a church congregation filmed as part of a History Channel documentary on Christmas traditions that I happened to see last December. If he’s an actor, and he shows up for the audition, he’s got the part of Sternvogel!
Well, I’ve compared a few times to the kid on the cover to Baby Geniuses. Apparently the movie and it’s two sequels are all on the IMDB top 100 worst movies of all time-list. Does not hinder facial similarities.
My ears are straighter, however.
Now don’t you dare make any comparisons to Jonathan Lipnicki! Hate that kid.