You can now stream films and TV shows from Netflix in ultra-HD resolution.
The company has flicked the switch on its 4K service, which streams shows in a resolution four times sharper than standard high definition.
But the bad news is that it will only work on some TVs.
The decoder required to stream in 4K is only built into more recent 4K TVs. So if you were an early adopter to 4K, you might not be able to take advantage of the service.
If you're buying a new TV, and want to be able to stream Netflix in 4K, you'll need the H.265/HEVC decoder built in.
You'll also need a fast broadband speed. According to Netflix chief executive Reed Hastings, you'll need an average speed of 15.6Mbps in order to stream in 4K.
The average UK broadband speed is 7.6Mbps, so a lot of us Brits may lose out.
Experts estimate only about 15-20% of the UK population have a broadband connection that's fast enough to take advantage of 4K streaming.
Netflix is offering the second series of 'House of Cards' in 4K, along with some nature documentaries.
Earlier this year, Hastings told the BBC: "We're at the very beginning of internet television. This bringing together of the internet and video so that people can choose what they want to watch, when they want to watch it, and we've had 50-100 years of linear TV channels or networks. And what's changing is they're becoming applications.
"Ultra-high definition 4K will be the first format that's internet-only. It's really focussed on internet delivery. So broadcast, cable, satellite, they're not going to have ultra HD at least in the next five years."