Much like your Wonkette, Fox News also enjoys assigning comical file names to photographs. Although "Obama_WarCouncil_doomsday"? Ehh. A bit overwrought, as all those words mean the same thing. Thanks to URL Spy "Ryan L." [monster; WarCouncil_doomsday; japan_monster]
UPDATE: Some Fox intern wrote in to Andrew Sullivan! Unlearn everything you thought you knew about FOX jpegs, stat.
It's like this, see?
I am a former intern in Fox News' web department, and I can tell you with certainty that "Doomsday" and "Monster" are internal code names used to describe the dimensions of images that appear on the FoxNews.com home page.
A "Doomsday Top" describes a wide oversized image, like the one of Obama's War Council in this example. When FoxNews.com goes into "Doomsday Mode," a single story will appear above the fold with one large photograph, such as this one.
Likewise, "Monster" corresponds to another image size: Big, but not quite as big as Doomsday. You will notice that the two images with the Monster title are the same size.
The fact that nobody bothered to rename these images something less ominous certainly constitutes laziness or carelessness on somebody's part, but probably nothing more.
And yet what of "Japan"? Can't exactly explain that one away.