Only one thing about the film I have issue with.....
The note from Clarence at the end says "...no man is a failure who has friends".
This is sort of a terrible message; that your self worth is dependent on having friends or not having friends. Plenty of total losers (failures) have had lots of friends. I mean, I'm sure Hitler, Charles Manson and Jim Jones had lots of friends, that doesn't make them successful people. Those men were total failures in every sense of the word.
Conversely, plenty of great people have no true friends. Look at Jesus. At the very end of his life, all his "friends" abandoned him ("Then everyone deserted him and fled." Mark 14:50). Does that mean Jesus is a failure?
It just seems like a bizarre message at the very end of the movie. Up until that point in the movie, the theme of the movie is to be grateful for your life and to be aware of what you can contribute and add to this world; not to determine your value in this world based on having friends or not.
Did Ebenezer Scrooge have friends? No.
Did Phil Conners have friends in the Groundhog Day? No.
Those point of those movies is also about being grateful and cognizant of how you can help others.
Am I reading to much into this? I love the movie. It's one of the greatest movies of all time, but that ending has always bothered me a bit and seems to contradict the overarching theme of the film - which is...you bring value to this world because of what YOU CAN DO, not what YOU HAVE (friends, possessions, money, etc.)