My favorite Christian singer right now is Paul Baloche. He wrote Open the Eyes of my heart...and Above all....and other really great songs.
You can search his name on Youtube and find clips of his instructional DVD's...he's a great guitarist and a good teacher too. Here are two of my favs
http://youtube.com/watch?v=oRkDzNEXed0
http://youtube.com/watch?v=4DkBF38nK...elated&search=
His lyrics are powerful to me...very meaningful yet easy to remember. I listen to his live CD a lot when I'm driving around...it really helps me center my thoughts on the Lord and think about how very good God has been to me!