My new splitscreen:
I have been experimenting with Firefox's Split Browser add-on as a way to watch videos online while doing other things at the same time. Before today I was often clicking on other tabs while listening to the audio from a vid clip. This way, I keep keep an eye as well as an ear on what I'm watching when my attention is divided. You can split any tab off right, left, above or below by right-clicking on the tab and calling up a "split tab" menu. The open tabs can be expanded or shrunk quite easily. Lifehacker notes that this add-on would be especially useful for people who have ample "screen estate" (i.e., really big monitors).
The pages you see above are an article at TeeVee about how some current shows are adding extra scenes of this season's episodes for viewing online (eps of The Office are available in extended versions from iTunes; Battlestar Galactica has an extra scene of its most recent ep up on its website); and a video of sand art by Dato and Ilana Yahav on YouTube (via MeFi).