They're the adverts we don't actually mind watching: a glimpse of a tantalising future. We get excited. We get annoyed that they tell us too much. We get perplexed that some of their footage doesn't end up in the finished product. But our cinematic lives would be all the poorer without the trailers. Here's our pick of 2017.
Dunkirk
Not much on display in this first teaser, but a sense of huge urgency thanks to that ticking-clock device.
Thor: Ragnarok
Our first glimpse at Thor's threequel gave us Led Zeppelin and jokes: something the previous _Thor_s hadn't been heavy on. "He's a friend from work!"
Call Me By Your Name
Sufjan Steven's Mystery Of Love underscores this sumptuously sun-dappled introduction to Luca Guadagnino's fable of first love.
Star Wars: The Last Jedi
What do you see? Light. Darkness. But what do you hear? Luke Skywalker's first words since 1983...
Baby Driver
Curiously this doesn't quite convey the choreographed jukebox of joy that Baby Driver turned out to be. And yet, even at this point, it was clearly a must-see.
Logan
Not quite up to the heights of the Johnny Cash-scored first trailer that arrived last year, but still doing nothing to dispel the buzz heralding Wolverine's final outing. "Two days on the road, only one meal and hardly any sleep, she's eleven and I'm fucking ninety."
The Killing Of A Sacred Deer
Undeniable, insidious chill pervades this first look at Yorgos Lanthimos' typically idiosyncratic follow-up to The Lobster.
Jurassic World: Fallen Kingdom
"I know why we're here. A rescue op. Save the dinosaurs from an island that's about to explode. What could go wrong?"
Happy End
It's hardly a knockabout, but the Happy End trailer marks a welcome return for Michael Haneke after five silent years, and finds him on more mischievous form than the heartbreaking Amour.
Blade Runner 2049
The excitement of seeing the farm-set scene that Ridley Scott had talked about for years, gives way to a punchy montage. We knew 2049 would look beautiful. This showed that it also had muscle.
The Florida Project
Advance word from Cannes was already ecstatic, and The Florida Project's masterful promo demonstrated to the wider world that Tangerine director Sean Baker was far from a one-hit wonder.
It
The clip that finally silenced all the social media goatboys bleating that this couldn't possibly be as good as a ropy TV miniseries from 1990.
War For The Planet Of The Apes
Two thrilling trailers preceded it, but this was the one that showed us Steve Zahn's adorable Bad Ape for the first time.