Sex in movies can range from a timid quick grope to a full-blown shag-athon that lasts for hours in a number of locations. A good sex scene, though, should ideally be tender, awkward, kinky, funny, passionate or, in many cases, all of the above.

With that in mind, and following some essential research involving many late nights (often past 9.30pm), we reveal the top 20 movie sex scenes that had the cinemas sizzling. Enjoy!

- Check out the best ever movie sex scenes