There was a time when 4K Ultra HD TVs were rare. No longer: 4K TVs are now in millions of living rooms nationwide, and and there’s a very good chance you’ve already got one (and if not, check out our guide to the best 4K TVto buy today). But finding things to watch on it in that lovely 4K resolution (you can call it UHD or Ultra HD if you prefer) can still be somewhat tricky. There are plenty of the best 4K movies and TV series on streaming services if you know where to look, though. Even better news: we’ve done the looking for you.