I like the ability to watch two events at a time, as shown here. The audio and video streams are independent of each other, and the user can swap the large and small screens with a single click.
There is a menu listing the currently available live streams below the right hand screen, and the user can switch among them with a single click.
There is buffering time whenever you make a change and the two streams compete for bandwidth, but it is a welcome feature with a well-designed user interface.
My gripe is with the advertising. When an ad pops up in one screen, the other stops and displays the message shown below.
I guess stopping the video preserves bandwidth for the HD commercial and forces the you to pay attention, but there is a major glitch -- it pisses the viewer off. I may never buy a Coke again, and, if I do, it surely won't be in one of their special Olympic Games cans.