Giles is one of the Thinking Woman's Sex Symbol

[slayerpower]

http://www.tvsquad.com/2006/11/06/the-five-the-thinking-womans-sex-symbol/

5. Anthony Stewart Head as Giles, Buffy the Vampire Slayer
Giles with his dusty books and fancy, archaic notions about civility. We know he has a bad boy streak from his Ripper years, but it's the library-bound, glasses-adjusting Giles that smart girls love.

 

[Ladybug]

Whoo! Giles love! There really isn't enough Giles love out there. Smart girls indeed, yep.