57 years old (Born on November 22, 1967)
Happy Birthday, Mark Ruffalo! Whether you're charming us as the lovable Matt Flamhaff in "13 Going on 30," or smashing villains (and buildings) as our favorite green Avenger, you've always been able to count on us being your biggest fans. Your ability to switch effortlessly from heartfelt dramas like "You Can Count On Me" and "The Kids Are All Right" to epic superhero blockbusters proves you're truly a Hulk-sized talent.Here's hoping your birthday is filled with more joy than Bruce Banner has patience—and fewer mishaps than his wardrobe malfunctions. Keep making cinema brighter; we love you 3000!