Factual error: When Elliot is the sensitive guy he picks up the guitar to sing a song to Allison. The guitar has a capo on it. During the song Elliot is changing cords and finger placement. He makes a cord above the capo. This would not be possible since the capo effectively cuts off the strings at the point of the capo. Any finger movement above the capo would not change the chord at all. (00:43:00)

Bedazzled (2000)
1 factual error - chronological order
Directed by: Harold Ramis
Starring: Brendan Fraser, Orlando Jones, Frances O'Connor, Elizabeth Hurley, Miriam Shor
Continuity mistake: When Elliot's the basketball player, when he scores the slam-dunk and breaks the headboard, he breaks the headboard after the slam as he bounces/hangs off the headboard. But in the replay he breaks the headboard as he makes the slam and then bounces/hangs off the headboard. (00:49:10)
Elliot Richards: But it's my soul! I can't give you my soul.
The Devil: What are you, James Brown?
Trivia: Not a mistake but something clever. When the Devil was a schoolteacher, the first equation on the board was Fermat's Last Theorem (X to the Nth + Y to the Nth = Z to the Nth for N is greater than 2). It was proven in 1995 that there is no integer solution to this equation; exactly the kind of problem the Devil would give to an Algebra class, but not really expected in your standard Hollywood film...





Answer: It definitely is a Montegrappa Oriental Zodiac pen, this brand has been making pens in Italy since 1912. I am not sure which of the three red pens in that collection (Oriental Zodiac) is the one seen in the movie, but given its association with the devil, my guess will be it is the Ox fountain pen.