Every Plane That's Disappeared Since 1948
With the search for Malaysia Airlines Flight 370 in its second week, the Bloomberg Visual Data team created this map of the 80+ large aircraft declared missing since 1948. "Large aircraft" is defined as "planes capable of carrying more than 14 people." There are more yellow dots on here than I expected, and that includes 11 lost planes since 2005.
Here's a pretty good recap of the various open questions related to the flight's disappearance.