NBC traditionally shows this 1946 Frank Capra film on Christmas Eve now, exercising its semi-exclusive access to the heartstrings-tugging movie by televising it on the most appropriate possible moment, the night before Christmas. What happens to Jimmy Stewart in It’s a Wonderful Life is worth watching at any time, but on this night more than most – especially after this year, when neighborly and financial concerns, and how we treat and help and respect one anothe