Sorry for the spoiler
I watched it first time around as a young teen too and I remember really loving episodes like the one where Buffy can hear everyone's thoughts - i.e. blatant teenage isolation metaphors - and characters like Tara and all the meta-televisual brilliance etc. going right over my head. Definitely one to re-watch, I agree.
Manter (I think..), re. Angel, I really must watch it too. Once you get into the plot of Buffy you realise you've missed stuff when the characters cross over. I remember abandoning it contemporarily when one of the early episodes broke my 13 year old heart
I've just remembered Harmony! This thread is really cathartic for me - purging my inner monologue