******SPOOKY-SEASON SPOILERS!****** And now for something completely different.  Taking a brief yet seasonally-appropriate break from my site’s usual sci-fi/horror/cinematic scribblings, this column explores a warm fuzzy childhood memory of mine; 1966’s “It’s the Great Pumpkin, Charlie Brown.” This was the third Charles Schulz Peanuts’ animated special, debuting on the CBS network after “Charlie Brown All-Stars”…