This year - 2007 - is Year C - the Year of Luke, when we read from Luke's Gospel on all the Sundays in Ordinary Time. I have to say that Luke is my favourite of the four Gospels - and one of my favourite stories in Luke is the Parable of the Prodigal Son. Again we can find it (like the Parable of the Lost Sheep) in Chapter 15.
Here is a lovely poster depicting the scene when the son returns to his father.
Quite appropriate, because last Sunday was Father's Day!