Patton Oswalt was on Conan last night being consistently hilarious and telling Conan about how he scares Trick or Treaters in Ratatouille costumes with an invitation to "Uncle Touchy's Naked Puzzle Basement: You won't wear a shirt and you'll cry": [videoembed size="full_width" alignment="center"][/videoembed] It seems like Conan is the late night go-to show for comedians talking about smoking pot. Leno, ...