Many readers are probably old enough to remember selecting a television channel by turning a knob. With just a dozen positions, it was the picture of simplicity.
Today, you could make a control knob the size of a Studebaker hubcap and it still wouldn’t accommodate all our viewing options. Cable and satellite providers routinely offer hundreds of channels of programming and additional video-on-demand (VOD) choices.
In addition, your Blu‑ray player or your Wii—or a media player such as a Roku or a Western Digital box—lets you watch movies and other shows from Netflix, Hulu Plus, Amazon Instant Video, and Vudu.
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