Well I'm a HUGE fan of the show, and have seen the first 7 seasons. I'm waiting for Season 8 to come to DVD before I check it out. It wouldn't be surprising to see Nancy die at the end... She wasn't all that likeable a character when ya really think about it.
But the writing and other characters totally make the show, IMO. Plus, it doesn't hurt that Mary Louise Parker is still hotter than shit!