The New York blackout one that makes no sense. All cars have stopped because there's no electricity. It's a power cut so the bloke decides to walk around New York in the dark. The burger van doesn't work. There's a light on outside the cinema. And the whole point of the advert seems to suggest that it's nice not to have your mobile switched on. Which would not have been affected by the power cut either, unless the battery had gone and he couldn't recharge it.
What do you think to "This Side Of Blue" as the soundtrack? http://www.bbc.co.uk/dna/collective/A3212740