I think it's only appropriate to start the month with the greatest Hallowe'en special of all, and the second best Peanuts special as well. Seeing this intro for the first couple times as a kid was actually a little scary, with witches, ghosts and bats all terrifying the gang- even Lucy is running away!
This special also marked the animated introduction of the WWI flying ace, as played by Snoopy. This intro really sets the tone, especially between Linus and Lucy. She does love her brother, but she doesn't always understand him.