Almost every major studio is now embracing the format and, should you own a 4K Ultra HD Blu-ray player or Xbox One S or X, you can treat yourself to the very best pictures and audio presentations possible.
The only question left is what to actually watch? We've chosen our top 4K Ultra HD Blu-rays you can rush out and buy today. You can't go far wrong with any of these. Most are at discounted prices on Amazon, please click links for offers.
Star Wars: The Last Jedi
Buy Star Wars: The Last Jedi 4K Ultra HD Blu-ray from Amazon.co.uk
The first Star Wars movie to get the 4K treatment, The Last Jedi is a great sign of things to come without being too garish or over worked. Its Dolby Vision HDR presentation is actually very subtle, with director Rian Johnson having a major say in how the home video version was adapted. And the 4K master also shows up the film grain purposely adopted for the cinematic presentation, which suits the series overall.
There are plenty of great extras too, including a whole stack of deleted scenes that are well worth a watch for true fans.
Best of the rest...
Blade Runner 2049
Buy Blade Runner 2049 4K Ultra HD Blu-ray from Amazon.co.uk
If there was ever a film made to extol the benefits of 4K Blu-ray, Blade Runner 2049 is it. Superbly directed, the HDR visuals are essential for bringing the saturated colours to life. Each frame is quite simply jaw-dropping.
There are also plenty of smoke effects and subtleties in detail, which the Ultra HD presentation picks out superbly. Then, of course, it's a stunning film to boot. A worthy successor to the 1982 original and one of our main 4K test discs of choice.
Blade Runner 4K Special Edition
Buy Blade Runner 4K Special Edition 4K Ultra HD Blu-ray box-set from Amazon.co.uk
You can buy the Blade Runner Final Cut on 4K Blu-ray separately but this box-set is truly the bees knees. It is a must-have for any movie fan and collector, with the Final Cut version on the 4K disc and theatrical, director's and workprint feature cuts appearing on 1080p Blu-rays.
The transfer, considering this is a 35 year-old movie, is amazing - it looks almost as good and current as the 4K release of its sequel. There is some grain, sure, but you barely notice. And we're especially impressed by the booming, haunting Dolby Atmos surround track that accompanies this release. A fine mix indeed considering the original movie release was in stereo.
Buy Justice League 4K Ultra HD Blu-ray from Amazon.co.uk
Although the 4K Blu-ray release of Warner's biggest superhero movie yet has been upscaled from a 2K source, it still looks stunning. The Dolby Vision HDR presentation is particularly splendid, with excellent contrast and brightness. The expanded colour field is also a marked improvement over the standard Blu-ray.
The Dolby Atmos track is beefy and extravagant for those with a compatible sound system, and while the plot does have some flaws, there are enough great set pieces to ensure it is great weekend blockbuster viewing.
Buy The Martian: Extended Edition 4K Ultra HD Blu-ray from Amazon.co.uk
Available as an Extended Edition, The Martian is easily one of the best looking 4K transfers around. The Ultra HD Blu-ray version comes with the added bonus of HDR, which you don't get with Sky Q Cinema, for example, which really adds to the sense of depth in the stark backdrops of Mars.
You also get a Dolby Atmos audio mix on this Extended Edition that shines at its best during the sandstorm scenes at the beginning. It's both a fantastic film, with an extended cut on offer, and a true example of why Ultra HD and HDR exist in the first place.
Blue Planet II
Buy Blue Planet II 4K Ultra HD Blu-ray box-set from Amazon.co.uk
As with Planet Earth II before it, the BBC's Blue Planet II documentary series gets a superlative 4K Blu-ray box-set that's a must for any collection.
Yes, you could have seen the entire series on BBC iPlayer in 4K and with HDR (HLG) but the bitrates on the disc collection are higher and, therefore, this is the best the shows will ever look. Stunning.
Buy The Revenant 4K Ultra HD Blu-ray from Amazon.co.uk
Oscar-winner The Revenant looks utterly superb in this high-end format. Director Alejandro G Iñárritu is no stranger to mind-blowing cinematography, having made Birdman or (The Unexpected Virtue of Ignorance) previously, but this is in another league.
The 4K transfer and super soundtrack certainly give it justice. One word of warning though, all scenes have greater detail and that might not be exactly what you want at times, if you fancy keeping your lunch down.
War for the Planet of the Apes
Buy War for the Planet of the Apes 4K Ultra HD Blu-ray from Amazon.co.uk
The last of Matt Reeves' Planet of the Apes trilogy is one of the most surprising, most sensitive blockbusters of recent times and you would think the CGI effects would be shown up a little by the extra detail of 4K. Far from it.
Caesar and the rest of the apes are rendered incredibly, with sharp detail on their fur and you are hard pressed to see the computer graphics overlaid on footage. It's not an hugely colourful film, being set mostly in the snow, but the greater contrast afforded by HDR picks up subtleties superbly.
Buy Deadpool 4K Ultra HD Blu-ray from Amazon.co.uk
Although it was a mixed bag critically, Deadpool is a funny, fresh superhero movie that will live on long in nerd circles. We absolutely love it here in Pocket-lint towers and with the sequel around the corner, you can catch up with the first in anticipation.
It was filmed in 4K so has an excellent video transfer that pops with detail, especially on Deadpool's suit.
Guardians of the Galaxy Vol. 2
Buy Guardians of the Galaxy Vol. 2 4K Ultra HD Blu-ray from Amazon.co.uk
Disney's first 4K Blu-ray does not disappoint, with an excellent transfer matched with great HDR10 control over the vivid colours and splendid contrast throughout the film.
The Dolby Atmos soundtrack is simply superb, although we were expecting to see Dolby Vision included on the release, rather than just HDR10. After all, we originally saw the film screened at Dolby's own London offices. It doesn't spoil the enjoyment, however.