"Calvin's name comes from the Theologist John Calvin. Hobbe's name comes from the philosopher Thomas Hobbes.
"Calvin's dad is a Patent Attorney.
"Miss Wormwood is named after the apprentice devil in a C.S. Louis story. ( I forget which one)
"Spaceman Spiff was made for a project in a high school german class, named Rumfahrer Rolf.
"Calvin has 7 different human alter-egos.
"Calvin has discovered 6 different uses for the cardboard box.
"On the back of The Essential Calvin and Hobbes, it shows a giant Calvin destroying a town. The town is Bill Watterson's hometown.
"Bill Watterson named the anthologies (The Indespensible, The Essential, and the Authoritative.) because they were none of those things.
"There is a very rare Calvin and Hobbes textbook which takes life lessons from the comics.
"You have your peanuts trivia, Gin, I have my Calvin and Hobbes."