There's stuff popping in and out in the upper-left. There's a permanent hashtag in the upper-right. There's the usual Discovery logo in the bottom right with a bright red 'Shark Week' logo above it. There are tweets popping in and out in the bottom-left. And, when they come back from a commercial break, the bottom 1/3 of the screen is taken up by a sea lion crawling from left to right advertising shark week, followed by a shark fin.
There's so much crap on the screen, it's difficult to concentrate on the show.
I'm only watching because they are actually building a megalodon ('Sharkzilla'), but I doubt if I'll be watching anything else. It's very annoying being able to see only about 20% of the screen.