David Crowder - A Collision
IMHO, his best album to date. This is a true LP. I wouldn't suggest sampling this one. Listen to each of the songs on the album, as this particular work is should be taken as a whole, and not as individual songs. His other albums are more song oriented and less album oriented.
These guys are Electropop up and comers. They're not a "Christian" band, per se, but they're Christians, and you can hear the message in some of their songs. If you ever get a chance to see them live, do it. It'll ruin every other live show you've ever seen. They're that good.
Real Calvinists, these guys. They're message isn't veiled at all, and sometimes borders on straight up activism. By the way, did I mention their music is amazing Americana-style rock?
I typically don't like the "female singer-songwriter" genre within Christian music. I feel like it's a bit too cookie cutter. It took me several years, then, to discover Sara Groves, as she seemed hidden among all the other female musicians out there. Nevertheless, her music is an audiophile's dream in many ways. Very rich instrumentation, acoustic. If you like people like Shawn Colvin, you'll like her.
This guy's shot to the top of the electronic music charts lately. If you've ever heard Postal Service and liked them, you'll probably like him. Very beaty, very electronic, and among his inspirations he lists G-Rated movies and John Piper (a very well-known preacher for those of you who don't know). Nevertheless, his music is incredible.
I've never really been able to get into this artist personally, but several people have. He's an electronic artist, often compared to Radiohead. You may like him, you may not, but hey, he's different than the "average" fare out there.