And talk about bad company! He/she/it is noisy and violent and whenever the object of his obsession tries to get a good night’s sleep he throws tantrums in the hallway and drags her kicking and screaming out of bed.

Floyd In True Romance (1993)

Who wouldn’t want Brad Pitt lolling around on their couch? Er, you might think twice if it’s Brad as Floyd, the shiftless sofa-dwelling slacker who thinks bong hits are the height of quality time at home, leaves salty-snack crumbs everywhere and couldn’t find the cleaning products even if you shoved them down the scruffy pyjama bottoms he uses for leisurewear.

Oh, and if you’re on the run from the heavies and they pop round your apartment Floyd will tell them exactly where you’re hiding.

Spike In Notting Hill (1999)

You have to wonder what urbane bookseller Will (Hugh Grant) is doing sharing his Portobello Road pad with Welsh layabout Spike (Rhys Ifans).

His underwear looks like it hasn’t seen a laundry since, well, ever, his hair is a stranger to Head And Shoulders and he’d clearly benefit from a scrub-down in the Silkwood showers. If Spike had been the lead rather than Will then Julia Roberts would have been forced to amend her famous line to 'I’m just a girl standing in front of a boy who needs a wash'.

Withnail In Withnail And I (1986)

Pretentious out-of-work actors aren’t great company at the best of the times, and when they come in the sloppy shape of Withnail (Richard E. Grant) they’re unbearable.

Wittering on about ‘the slings and arrows of outrageous fortune’ whilst smothering himself in Deep Heat to keep warm, he drives I (Paul McGann) to despair in their hideous Camden Town flat, then drives him to a country cottage for an encounter with lecherous Uncle Monty (Richard Griffiths) and pimps him out to the old perv in return for a roof over their heads.

The Roommate is out on DVD & Blu-Ray now