Just think of the Zeppo as an early character study of Xander. And in that case it is amazing. Also Xander becomes one of the only characters we know isn't a virgin now.
Zeppo is where Xander became my favorite character. I love that final confrontation with the zombie dude. "I like the quiet".
Zeppo is definitely a personal favorite, but you can't take the "A plot that is really the B plot" seriously.
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"Hope is allowed to be stupid, unwise, and naive." ~Sir Chris