I always listen to this youtube video around Christmas time as it's one of the most moving versions of "Oh Holy Night" I think I've ever heard.  Performed by Jussi Bjorling, labeled by some as "The Perfect Tenor," this song has got to be emotionally moving to anyone with a pulse.  My favorite part is round-about 1:11 minutes in, where it really kicks off.  Unfortunately the uploader has disabled embeds for the video.  Anyways, hit the link below and enjoy, but most of all have a great holiday!

http://www.youtube.com/watch?v=9nrDfqoYzNo