American actress Sarah Michelle Gellar has led the tributes to her Buffy The Vampire Slayer co-star Anthony Head after the death of the English actor aged 72.Head was best known as librarian Rupert Giles in the cult US supernatural TV series, starring Gellar in the the title role, which ran from 1997 to 2003.

American actress Sarah Michelle Gellar has led the tributes to her Buffy The Vampire Slayer co-star Anthony Head after the death of the English actor aged 72.Head was best known as librarian Rupert Giles in the cult US supernatural TV series, starring Gellar in the the title role, which ran from 1997 to 2003.