The deceptively simple notion of "watching TV" has continued to change dramatically over the years. We started with only a few select channels in black and white, quickly progressing to all sorts of network television, local stations and special interest channels. These days, so much of "watching TV" has nothing to do with traditional TV at all, since it is delivered in streaming format over the Internet. If you don't have a smart TV (or even if you do), you might consider adding the new Roku 3 to your home theater to best tap into this increasingly impressive range of content.