Sarah Michelle Gellar
Sarah has a total of four tattoos. Her first is the Tao symbol for Patience, apparently it's suppose to be a dagger dangeling over a heart. For Sarah, the tattoo symbolizes the end of a rocky relationship and Sarah felt that she had to mark that relationship in some way. The tattoo can be found on her right ankle.

Her second tattoo is the ancient script form of the Chinese word xi, which means happiness or good luck. This tattoo can be found on her right hip.

Two Dragonflies are her third tattoo. "... the dragonflies are something Freddie, and I share, our love of dragons and dragon flies." This tattoo can be found on her lower back.

She just recently got a fourth tattoo, it can be found on the inside of her left ankle. If anyone has more info on this tattoo please email me :)

Buffy Summers
In the episode "The Dark Age" of season two of Buffy, Ethan, an old pal of Giles' tattooed Buffy with the mark of Eyghon to destract Eyghon's attention away from himself. Buffy later had it removed.

In the episode "Dracula vs. Buffy" of season five of Buffy, Buffy had a temporary tattoo of a flower on her right shoulder while at the beach. We never saw this tattoo again.