Well everyone likes quality entertainment. I love Charmed, and somewhat watched Sabrina, and I am one of the biggest Harry Potter fans in the world! But I keep them different, separate. I hate mingling the two. Buffy/Angel is another favorite of mine, with their realistic (somewhat) portrayal of a witch.
Supernatural is one of my favorite shows. But it says all witches are evil, witch I obviously disagree with! But I still love it non the less, because that is a minor subplot which is only brought up twice. (and the main characters practice magick sometimes but that's not "witchcraft")
Like I said Ive been a Harry potter fan my whole life. When I became a witch, I specifically decided to use and Athame instead of wand, because I automatically associate the wand with Harry potter, and I don't want fiction, as fine as it may be, in my religious workings.
[the secret circle looks like a fricken awesome show and when I found it about 2 months ago.....I just can't wait either]