In the world of modern-day superstar sex symbols, there are those who simply look beautiful, and then there are those like Eva Mendes. Willing to play roles that range from the brilliant to the ridiculous, she's famously starred in both Oscar-nominated fare like "Training Day" and loony comedies like "The Other Guys."   Her newest film, which opens today, is called "Last Night."  The movie follows a husband and wife, played by Sam Worthington and Keira Knightley, who are each faced with the temptation stray from their marriage. Eva Mendes plays the woman who catches the eye of Sam Worthington's character. Below: The trailer for "Last Night."

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