Recently I pointed out that the little portable wifi device Mifi, which connects over the cell phone network, could be a backup network.
Well, I never thought I'd ever need it, because I have both a cable connection and a ADSL connection, and what are the odds of them both being down at the same time? And yet, right now they both are, and I can only use the Mifi. Spooky.
... Update: OK, that was strange. But now my cable connection is up again. It's weird, when I don't have Net access, it feels like a cutoff of oxygen supply or something. My instant connection with the globe has become part of me.