Yes, the devil is real. That's probably why this video has caused so much excitement as we in the West (including New Zealand especially) really don't want him to exist.
However, it's best not to be too interested in him, and go to regular Confession as your major protection from him. He's not called The Accuser for nothing, and if a person has major unforgiven sins on their soul, they can be in real danger.
Hattip: LongKnives on KiwiBlog
Related link: Rumours swirl of papal exorcism ~ Stuff