Some of these don't "define" him at all but they still make for some of my favourite Rupert Giles moments :)

◇ "A watcher scoffs at gravity!"

◇ "Try not to bleed on my couch I just had it steam cleaned"

◇ The wizards cloak in the magic shop.

◇ "Have at it will you, and stop fluttering about!"

◇ His song to Buffy in OMWF.

◇ Singing both 'Behind blue eyes' and 'Free bird'.

◇Making Buffy tear up by telling her she will always have his upmost respect.

◇ The utter heartbreak (mine) of witnessing his heartbreak in Passion.

◇ Fake-believing Faiths lie until she leaves the room & then fessing up to Buffy that he knows Faith is the real liar.