Hank Azaria

When a charming but overweight Dennis (Simon Pegg) leaves his pregnant fiancée, Libby, on their wedding day, it takes him years to realize how strong his love for her truly is. But, her heart has now been snatched up by a handsome, wealthy man who can't wait to make their love a lifelong commitment. To Dennis, this new man is completely wrong for the mother of his child and he will do anything to win her back. Prompted to finish the annual Nike marathon, Dennis must work hard to overcome his out-of-shape stature and secure his one had, now lost love.