Sarah Michelle Gellar got to show off her acting chops in a big way as Buffy Summers.
Those acting chops have served her well in the years since Buffy came to an end.
Some shows have definitely been better than others, but none of them would likely have made it to the airwaves if not for the success of Buffy the Vampire Slayer.
She brought emotional realism to a fundamentally unrealistic series, and she was a pro at dropping one-liners.