Danica McKellar‘s holiday season just got infinitely more exciting courtesy of her new Great American Media movie, The Greatest Christmas Gift. “This is a beautiful story,” McKellar, 51, exclusively tells Us about the new film, premiering across the world on Great American Pure Flix on Saturday, November 29. (It will also air on Great American Family that same day and GFAM+.) The actress reveals that fans may recognize the plot from The Gift of the Magi, written by O. Henry in 1905. In the original story, McKellar recounts, “A couple loves each other so much that they give...