Not a Christian song, but in great respect the attitude members of the body of Christ should have (and a tremendous version of this tune):
[youtube=http://youtu.be/Aw2YvkxaD0U&w=512&rel=0]
And a bonus non-Christian recent-tune favorite:
[youtube=http://youtu.be/TKBPGT1d_Bc&w=512&rel=0]