Plenty of disaster programs on Sky.TV. See, common as muck!
Usual 'only in America' perspective. And 'what will it do to New Yorkers in particular.
Mega tsunami: La Palmas volcano the source. Hits New York.
Asteroid: If it hits New York.
Comet: If that hits New York also.
Mega Flood: If that ..... oh that was last week.
Earthquake: Cascadia fault-line. OK that's on the West coast but will cost New Yorkers money somehow.
Mega Volcano: Yellowstone caldera. Long over due. Cloud of ash will reach New York.
Yes hoards of New Yorkers live in fear that at any moment, a natural God given disaster will destroy, in one instant, them, their families, their home and all their possessions and worse of all their automobiles.
If you haven't already caught it, make sure you see 'Evacuate Earth' when they repeat it. Every now and then, Nat Geo comes up with a really great documentary; this is certainly one of them. 
Oh and if Yellowstone blows, it won't just be the USA's problem - it will be an E.L.E: Extintion Level Event.
Actually if the Yellowstone caldera thing does happen the game really will be over.
Yep and unlike a potential asteroid strike, there's not a damn thing we could do about it. With an asteroid, a big bang in the right place could move it off course by a few centimetres: with sufficient warning, that's enough to make it miss the planet.
And then there's the forthcoming Solar Maximum, when the sun is at its most active. When we were hit by a CME (Coronal Mass Ejection) in the 1800s sometime it wasn't too bad. If we get hit by one now and it fries the power grid, then we're immediately back two hundred years or so. Satellites, mobile phones, computers, GPS - all of that would go belly up. Fortunately, they reckon that with sufficient warning they could merely turn down the power grid or turn it off entirely so when the CME hits, there's nothing for it to fry; a bit like unplugging things when you know a storm's coming. Obviously that'll mess the world up for a few days, but it would be nothing compared to the power grid being permanently fried.
And yes, a gamma ray burst would do the job in a most comprehensive way as well.
Finally, if anyone's still around in 5 billion years time, they'll witness the sun run out of fuel and enlarge in size to a 'Red Giant' which will consume the entire inner Solar System, Earth included.
Nice, eh?
Edited: 28/12/2012 at 18:54