Tom Standage: How commonplace books were like Tumblr and Pinterest, drawing from the research for his forthcoming book.
See also: the distractions of social media, 1673 style.
Battlestar Galactica, while good, evidently didn’t have a plan (which is hilariously obvious if you watch the spin-off movie of the same name, which tries to retcon a narrative on top of the twists and turns of the first couple of series). Buffy, perhaps the first mainstream show to attempt long story arcs, only really did them on the scale of a single season.
However, way back in ‘93, Babylon 5 started what turned out to be a five year arc, and managed to carry it off despite both cast changes and uncertainty over its fifth season. The series may have a lot of flaws (the writer, JMS, has a nasty habit of portentous writing and the effects have dated somewhat badly) but I think it’s missing out on some of the credit it deserves for actually having a plot that was thought out at the beginning, rather than coming together as the series careered onwards.