Unlike DHARMA, DARPA is actually a US agency, not a private endeavor. But, in addition to the name, there are some projects worth considering – especially the High Frequency Active Auroral Research Program (HAARP).

From Wikipedia’s DARPA entry:

The Defense Advanced Research Projects Agency (DARPA) is an agency of the United States Department of Defense responsible for the development of new technology for use by the military. DARPA has been responsible for funding the development of many technologies which have had a major impact on the world, including computer networking, as well as NLS, which was both the first hypertext system, and an important precursor to the contemporary ubiquitous graphical user interface.

Its original name was simply Advanced Research Projects Agency (ARPA), but it was renamed DARPA (for Defense) on March 23, 1972, then back to ARPA on February 22, 1993, and then back to DARPA again on March 11, 1996.

DARPA was established in 1958 (as ARPA) in response to the Soviet launching of Sputnik in 1957, with the mission of keeping U.S. military technology ahead of the nation’s enemies. […]

DARPA is independent from other more conventional military R&D and reports directly to senior Department of Defense management. DARPA has around 240 personnel (about 140 technical) directly managing a $3.2 billion budget. These figures are “on average” since DARPA focuses on short-term (two to four-year) projects run by small, purpose-built teams.

DARPA is known for creating the Internet and, more recently, for their paranoia inducing projects like Information Awareness Office and creating robotic insects.

But no DARPA project has attracted as much interest from conspiracy analysts as HAARP. From 60 Greatest Conspiracies’s HAARP entry:

In an Arctic compound 200 miles east of Anchorage, Alaska, the Pentagon has erected a powerful transmitter designed to beam more than a gigawatt of energy into the upper reaches of the atmosphere. Known as Project HAARP (High-frequency Active Auroral Research Program), the $30 million experiment involves the world’s largest “ionospheric heater,” a prototype device designed to zap the skies hundreds of miles above the earth with high-frequency radio waves.

Why irradiate the charged particles of the ionosphere (which when energized by natural processes make up the lovely and famous phenomenon known as the Northern Lights)? According to the U.S. Navy and Air Force, co-sponsors of the project, “to observe the complex natural variations of Alaska’s ionosphere.” That, says the Pentagon, and also to develop new forms of communications and surveillance technologies that will enable the military to send signals to nuclear submarines and to peer deep underground.

60 Greatest Conspiracies first reported on HAARP more than a year ago. Since then, inquiring Internauts have blamed the peculiar project for everything from UFO activity to major power outages in the Western United States, to, most recently, the downing of TWA Flight 800. (The Pentagon maintains that the HAARP array has been inactive since late last year.) Some have dubbed it the “Pentagon’s doomsday death ray.” Though many of these theories are, well, creatively amplified, an assortment of more grounded critics–environmentalists, Native Americans and Alaskan citizens among them–argue that the military does indeed have Strangelovian plans for this unusual hardware, applications ranging from “Star Wars” missile defense schemes to weather modification plots and perhaps even mind control experiments.

Sounds oddly familiar, doesn’t it?