I've been watching it on and off too since it was about a group of mostly interns dealing with problems as mundane (by today's soap standards) as murder and drugs. But I enjoyed it more as a supernatural soap, and though the quality of those plots had declined to a ridiculous point I think it's a pity that it was cancelled just as a werewolf had been introduced.
Anyway, on the Jump the Shark site, a chief complaint about PC's more recent stories seems to be that it borrowed too heavily from contemporary stories such as "Frequency", "Back to the Future", and "BtVS" in addition to DS. While our show was guilty of the same (if you think the DS writers borrowed only from literary works, you have only to check out "Horror of Dracula" on TCM this month, which was ripped off for at least 2 scenes), DS also offered the audience some very creative material, excellent writing, and often some superior acting, none of which PC could claim.