This month’s MVP is Denis Leary, a stand-up comedian turned actor who appears in two of the biggest movies of the summer. Last week he starred in “The Amazing Spider-Man” as police Commissioner Stacy, the protective father of Emma Stone’s Gwen. And this week he returns for the fourth in the “Ice Age” series, “Continental Drift,” providing the voice for Diego, the saber-tooth tiger. Leary has become a fine actor and he gets a chance to create a full and complex character in “Spider-Man.” And in “Ice Age 4” he gets a romantic interest in Jennifer Lopez. I’ve been a fan of Leary’s since “The Ref,” and it is great to see him in these two roles.