BtVS: I care most about Buffy, Spike, and Dawn (with Anya coming in a close fourth). I identify most with Buffy (but only in S5-7), Spike (so much so that it's kind of disturbing), and Giles (until the later couple of seasons).

AtS: I care most about Cordelia, Lilah, and Spike (with Connor and Gunn coming in close behind). I identify with...no one. I have no character to identify with on that show. Which is...strange.