Blimey! Xander-centric... my first reaction was a great big "huh!?" but then I started remembering things like Go Fish and Teachers Pet and my thought obviously became "best!?" - and then I read Hazel's choice and thought... "Yeah! That was OK" so... and sorry for just leeching of Hazel but you know... best Xander-centric episode will have to be (Xander's Doppelgangland) The Replacement

Hopefully some of my own thinking tomorrow!