His name is Isaiah Mustafa, he is known as the Old Spice Guy.
This is a commercial for Old Spice featuring him.
This is an article, Old Spice Guy Takes Web By Storm, from The Sydney Morning Herald about the current web-based campaign featuring in character responses by Mustafa (posted on YouTube) to various questions, comments and requests directed to him through social media.
This is a YouTube of the best known of these where Old Spice Guy proposes marriage to a woman on behalf of someone named J.S. Beals.
There are many more on the Old Spice YouTube channel.
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