Hosted by Andrew Quinn and Darren Mooney, and this week with special guests Doctor Bernice Murphy and Joey Keogh, The 250 is a weekly trip through some of the best (and worst) movies ever made, as voted for by Internet Movie Database Users. New episodes are released Saturdays at 6pm GMT.

So this week, a Halloween treat: Ridley Scott's Alien.

A mysterious signal from deep space awakens the crew of the shipping vessel Nostromo. Following standing orders to respond, the crew find themselves drawn to a hostile and barren world. They track the signal to the wreckage of a strange and mysterious craft. However, there might just be something sinister stirring deep within that wreckage.

At time of recording, it was ranked 52nd on the list of the best movies of all time on the Internet Movie Database.