[Vulture] William Zabka,  who played the bad guy in "The Karate Kid", had a great Halloween costume:  The Bad Guy in "The Karate Kid"!

Some guy dressed up as "The End of the Credits of 'Cheers'."

He dressed up as a guy in one of the old-timey photos from the credit sequence, and he made a transparent sign with the text that appears in front of the guy in the credits.

Here's the original...

If you're pressed for a Halloween costume, this is pretty awesome:  You can be Jack Skellington from "The Nightmare Before Christmas" using nothing but black and white makeup.