Switchfoot- ok so they're not strictly a "christian" band but they are all christians! (oh and check out "mess of me" on youtube!)
Ben Cantelon- brilliant songs with great tunes!
Tim Hughes- Happy DAY!
29th chapter- the only rappers I like!
Delirious?- legends. Amazing songs and hugely talented. I'll be sad to see them go!
Honourable mention include: Casting crowns (with songs that just relate so well to my life) and Matt Redman (whose new album was unexpectedly good!)
So many more I could choose!