LOS ANGELES — If you want to understand what’s going on in the streaming business, go find Elmo and Cookie Monster.

Looking for something to put your fancy TV or projector to the test? Then stream one of the shows or films on this list. We've put together the best 4K movies and series right here.

In a rare corporate do-over, Warner Bros. Discovery says it is changing the name of its Max streaming service back to HBO Max later this summer.