Hollywood's obsession with revisiting lucrative franchises isn't going anywhere, but sequels aren't always such a bad thing.
The world is a better place thanks to the likes of The Empire Strikes Back, The Godfather Part II and Airplane II: The Sequel... okay, not so much that last one.
Then there are less obvious examples such as Infernal Affairs II, The Color Of Money, Before Sunset and Mad Max: Fury Road.
We could list films all day, but the point is that not all sequels are shameless cash-ins, pale imitations or inferior siblings - there are times when the original can be enriched through further exploration in a companion film.
Countless sequels have ended up lost in the depths of development hell, and while some emerge years later like M. Night Shyamalan's long-mooted Unbreakable follow-ups, there are other promising ideas which never see the light of day.
From elusive final chapters in unfinished trilogies to the long-awaited follow-ups we've been promised since time immemorial, there are tantalising sequel ideas out there that simply must be pushed into development post-haste.