12/19
Ron Galella/Ron Galella Collection via Getty Images
When Xander needed a doppelganger on Buffy the Vampire Slayer for the episode "The Replacement," Nicholas had one at the ready—his own identical twin.
"He pays me $200 a week to sign autographs," Kelly quipped to People in 1999.
FYI, both brothers go by their real first and middle names, and their last name is Schultz.