Leela and the Genestalk - S7-E22
Continuity mistake: When Leela's parents call Fry on her "wrist thingie", we see it has clamps on the back that go like "up down up down" but in the middle of the sequence they change to "up down down up". (00:12:50)
Answer: The initial number is 0101100101 = 357. When reflected in a mirror, however, it reads 1010011010 = 666 (the number of the Beast). It is a parody of The Shining, where the words Red Rum are seen as the word murder in the mirror.
Sierra1 ★