Thanks to our pals over at Videogum, we can now take a sneaky peek at the funny opener for this Sunday’s annual episode of The Simpsons’ “Treehouse of Horror” (FOX, 8 pm). It’s a dead-on parody of the Mad Men opening sequence — which is almost as cool as the original.

Bang bang, choo-choo train, let me see you shake that thang. Wm. Steven Humphrey is the editor-in-chief of the Portland Mercury and has held the job since 2000. (So don’t get any funny ideas.)