Jesus of Nazareth (1977)

Jesus of Nazareth is six hours long.  I broke it up into two viewings, but you might want to make it three.  It is very thorough, and actually very good.  So far it's my favorite Jesus movie.  It covers everything from before conception to after the Resurrection.  The acting is very well done.  The characters (even Jesus!) behave like real people.  The costumes manage to be both historical and interesting.  At this point I would suggest that if you are trying to watch your way through history and only want to watch one Jesus movie, watch this one if you have the attention span for it.