In citing precedence, Daniels says "on August 17th, 1977 . . . I believe it was a Thursday." Harry then says "It was a Tuesday." In actuality, it was a Wednesday.
Harry puts salt shaker tops on his eyes and says, "Vincent Price in The Fly! Help me help me help me!" While Price WAS in the movie,he didn't play the scientist turned fly, and wasn't the one with the line "help me!"