Today the trailer for the latter was released, and here’s Tom Cruise base-jumping from the Burj Khalifa:

Tom Cruise risked his life performing stunts for “Mission: Impossible 4″ in Dubai over the weekend: the star, 48, dangled almost 2,717 feet in the air near the top of skyscraper Burj Kahlifa, the tallest building in the world.

It’ll be interesting to see this flick, directed, of course, by the guy who did The Incredibles and Iron Giant (yes, I’m serious).

Apparently 825 of the Burj Khalifa’s 900 ultra-luxury apartments remain unoccupied. (I assume that’s since the January opening).

Key quote:

But it’s the units that will be completed that are looming as a problem. The Dubai economy must still digest a flood of housing units coming on line or soon to be opened, which will further dampen prices. Through September, 27,000 residential units have been put on the market, and another 9,000 are expected to be completed by the end of the year, according to real estate firm Jones Lang LaSalle. For 2011, the firm forecasts that about 30,000 new units will come on line.

This is a whole new economic crisis!

Key quote:

From a technological standpoint, it’s profoundly impressive that a reinforced concrete frame has outperformed the steel of Taipei 101 — the previous record holder for height — by 1,050 feet. This achievement suggests a new era in structural engineering: the compressive strength of concrete has tripled in the last four decades, allowing concrete structures to be thinner, lighter and far, far taller.

And it’s leaking.

So says the Gulf News: “Dubai Mall aquarium cracked and leaking.”

Uh-oh.

Remember when all they had to worry about was shark fights?