We used the Veggie Tales episode:
Veggie Tales: The Wonderful Wizard of Ha's
We enjoyed it very much and it does get to the end of the story with the father welcoming the wayward son home with open arms. No segment about the brother.
The humor is great, if you are a Wizard of Oz familiar. My 12 year old got 90% of the jokes, my 9 year old got 60% and my 5 year old enjoyed the movie but didn't understand the Wizard of Oz references. For him, the old "Yellow McToad" was a funny character, but he didn't get the association when the characters are told to "Follow Yellow McToad". But my husband and I giggled & giggled.
The heavier weight of theme, imho, is "you can't always have what you want", more than forgiveness, but it does a reasonably accurate job of following the basic story.
What did the son want? What did the father want?
Does God always get what he wants with us?