Yes Virginia, There Is a Santa Claus (1991)
Overview
While newspaper writer Church struggles with the death of his wife, he receives a "special" assignment. He must answer a little girl's question about whether Santa Claus really exists.
Cast
Richard Thomas, Charles Bronson, Katharine Isabelle, Ed Asner, Tamsin Kelsey, Shawn Macdonald, Garry Chalk, Frank C. Turner