Over at Mind Matters, there's a cool post by Fionnuala Butler and Cynthia Picketton on the benefits of watching television when lonely, which seems to provide the same sort of emotional relief as spending time with real people:
This research makes perfect sense to me. I never travel without a backpack full of TV shows on DVD, as I find the melodrama of good television (The Sopranos, The Wire, The Shield, The Tudors, House, Lost, Freaks and Geeks, etc.) to be extremely soothing after a day spent with strangers. It's so comforting to press play and enter into a familiar social network, even if that social network involves the New Jersey mob.
Further thoughts: I'd argue that the ideal way to experience the palliative benefits of TV is on DVD. (In other words, the storage technology has revealed the full potential of the medium.) When we're able to experience episodes back to back - I watched the entire first season of Lost in a single visual binge - it's much easier to develop serious emotional attachments. The characters develop depth and history; the plots are able to cultivate all sorts of intricate layers and connections. There's no waiting or forgetting. Instead, we're plunged deep into another world, fully immersed in lives which are much more interesting than our own.
The bad news, of course, is that all TV shows end. (And they end even faster when you watch them quickly on DVD! I was seriously sad after finishing Six Feet Under. And then I got even sadder when I realized what this said about my life.) Interestingly, such "breakups" emulate many of the negative emotions triggered by real breakups.
The moral is that there is no such thing as "mere" entertainment. The human mind is an attachment machine, forming emotional bonds with stuffed animals, invertebrates and Izzie Stevens. A good drama might ease our loneliness, but a breakup is still a breakup.
Update: Someone just emailed to ask if the advent of reality television (New Jersey Housewives, The Bachelor, etc.) might have altered this effect. The short answer is I have no idea. The slightly less short answer is that I imagine we're even more likely to form attachments to characters on reality TV shows, since the characters are purportedly "real". It's similar to how movies are always much more frightening when preceded by a line about how the drama is "based on real events".