If you click on the link you will learn a lot about the interesting life of the most interesting man, but here is some tobacco related info:
Goldsmith is a natural around cigars, and cigars have found their way into the ads as well. The Most Interesting Man holds one in many of the spots, quite comfortably, like the smoking veteran that Goldsmith is. It pops up only in certain scenes, like the one where he's piloting a Zodiac at impressive speed through rough waters, a quartet of beauty pageant lovelies (in their evening gowns and tiaras, naturally) smiling and enjoying the ride just as much as he is.
He smoked cigarettes until 1963 when he played a cigarette smoker in the movie Act One. Goldsmith kept inhaling cigarettes down to the required length to make the scene right-it nearly killed him, and he quit. Four years later he took up cigars and never looked back.
Today, he smokes cigars along with his wife, often Dominicans, such as Arturo Fuente Hemingways, Auroras, Romeo y Julietas and a bargain brand called Villa Dominicana. Barbara likes small cigars, and puffs on little Al Capones. "I smoke a cigar every day of my life," he says. "If I have a rich lunch, then I have to have a cigar afterwards." He enjoys a Savinelli pipe as well, sometimes smoking a bowl filled with aromatic Captain Black after breakfast.
Goldsmith lives on a sailboat, docked 20 minutes from downtown Los Angeles, which allows him to smoke in cigar-unfriendly California. "Cocktail time, sunset, we have a cigar. I associate great cigars with the sea, the ocean. I like to sip the local rums and have a good cigar."
http://www.cigaraficionado.com/webfeatures/show/id/15578/p/3/