Don't misunderstand . I don't actually watch Supernatural but you know how some nights you're bone-tired and whatever is on is what you end up half-watching. (I think my TV must have been on the CW due to Ringer). I always perk up when TV shows reference movies and wonder what possessed the writers.
In the episode the supernatural hunting brothers are investigating mysterious murders connected to this guy Don (played by James Marsters) and his wife (played by another Buffy alum Charisma Carpenter... so it's like Spike & Cordelia got married. Ewwww!)
Dean: So the scorned wife is into the dark stuff.
Sam: And Don's just in the dark.
Dean: Hmmm. it's kind of like Bewitched. You know Don is Darren and doesn't even know it. Lot of laughs 'till you cheat on your wife.
Sam: A Bewitched reference? Really?
Dean: [Lustfully] Dude. Nicole Kidman was in the remake. Redhead. Hellooooo.
This is the first time I've ever heard the BEWITCHED (2005) referenced in a positive way anywhere in my life !!!