Stars You Didn't Know Were Related

by Alex Ungerman      3:50 PM PST, February 13, 2014

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Ben Affleck - Matt Damon

Good Will Hunting! These movie star buds have a friendship that goes back to grade school, but did you know their genealogical relationship goes back even further?

The Batman heir-apparent with perfect facial hair to boot and Jimmy Kimmel's mortal enemy are tenth cousins.

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