I'm thinking of this because on Easter Sunday there will be a live broadcast of Jesus Christ Superstar with a pretty cool cast. Being raised Jewish and being an agnostic, one would think I'd get myself far away from this. But this show has one of Andrew Lloyd Webber's best scores and awesome songs, I've liked it for years, and I'm very much looking forward to the broadcast.
I still enjoy Madeleine L'Engle's books, and Christianity was important. Same with Shakespeare, not to mention CS Lewis' Chronicles of Narnia.
Music by the Cruxshadows, who regularly use religious references as a shortcut in their music. Old music written by Hildegard von Bingen in the Medieval era.
For that matter, the reboot of Battlestar Galactica had a lot of religion in it, especially the two season spinoff Caprica (which I don't like). Babylon 5 had a lot of religious references as well.
Gulliver's Travels. It only pretends to have religious overtones, but Jonathan Swift was actually writing brutal social satire.
The song the Prayer, but only the version by Chloe Agnew of Celtic Women.
Some of the gorgeous, non-religious new music:
I also love the choral music of John Tavener. Here's a link to his rendition of the Lord's Prayer which is just exquisite.
I love Jesus Christ Superstar! especially this version where the Indigo Girls play Jesus and Mary.
Everything by Sufjan Stevens. Pretty sure he's very Christian, but I cannot live without his music.