I have been the recipient of countless judgmental looks and statements because I am part of the fandom known as Saltgunners. This particular group of super fans are more or less avid viewers of Supernatural.
Supernatural follows two brothers, Sam and Dean Winchester, who travel all over the country picking fights with demons, ghosts, and other supernatural beings. A brief history of how two twenty-somethings got into such a field: Sam and Dean's mother was killed by a demon when they were really young. Their father became a hunter, taking the boys across the U.S. with him. Sam left the "business" to go to college. Dean stayed with his father. One unusually long hunt forced Dean to find Sam and search for their father. They've been to hell, purgatory, and heaven. They've battled countless monsters, included leviathans, vampires, and shapeshifters. They've had more deaths and resurrections than Buffy ever did. Their best friend is a fallen angel. They drive a 1967 Chevy Impala affectionally named Baby.
So they started the apocolypse... they also ended it.
So they're the vessels for Michael and Lucifer... they played their roles - with ulterior motives.
So they have a thing for women and booze... they are twnety-something guys who are on the road 95% of the time. Not an excuse, but it is a secular show.
So the show delves into lore about supernatural beings from every religion imaginable... it's quite the learning experience.
As a Christian, I can honestly say that I don't find anything wrong with the show. I don't see it as a sin to watch it or expose myself to it in anyway. They show is about defeating evil and doing the right thing. They have saved countless lives in the process. I think my favorite part of the show is that every episode challenges Sam and Dean in one way or another. Sometimes it's faith in a higher power (Dean has this thing about God... he's working on it.), sometimes it's trusting people, sometimes it's just a matter of doing the right thing even when it means losing someone. The boys always put family first. Always.
In episode two of season four, "Are You There God? It's Me, Dean Winchester", Dean has to come to gripse with the fact that God commanded an angel (Castiel) to drag him out of hell because "God has plans for him". Dean is confused and angry when he asks, "What does God want with me?" and later on, "If He doesn't exist, fine. Bad crap happens to good people. That's how it is. And no rhyme or reason, just random horrible, evil. I get it. Okay? I can roll with that. But if He is out there, what's wrong with Him? Where the hell is He while all these decent people are getting torn to shreds? How does He live with Himself? You know, why doesn't He help?" Fast forward to, well, really any situation involving Sam, and we see him praying We see him broken before God asking for help. We see him coming to God countless times over the seasons when he's at the end of his rope. He's a stubborn man, that Dean Winchester, but we're seeing changes in him that can only happen through faith and acceptance.
I could sit here and defend the show all day, pulling mini-sermons from every episode, but who really wants to read that? Just watch the show. It's equally thrilling and funny. You'll be hooked. You'll find yourselves reading the Bible to check their facts. You'll realize that, as a Christian, you should probably be serving God more like Sam and Dean. This earth is a battlefield, guys. Even seemingly normal people are fighting some battle. I'm not saying you should start carrying holy water and salt everywhere you go, but maybe be a little more perceptive to what's going on around you and realize that you can do something.
Oh, and you'll never listen to "Carry On My Wayward Son" the same way again.