Throwback!See George Clooney, Julianna Margulies and the Rest of the ‘ER’ Cast Then and Now!

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Anthony Edwards (Mark Greene)

In addition to ER, the 53-year-old's acting credits include Fast Times at Ridgemont High, Top Gun, Zodiac, Miracle Mile, Revenge of the Nerds, Planes and Northern Exposure.

Credit: Getty Images
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