Debian was first announced on 16 August 1993, by Ian Murdock, who was then a student at Purdue University. The latest stable release of Debian is 4.0. Debian is well known for following the Unix and free software philosophies. All code names of Debian releases are names of characters from the film Toy Story - Buzz, Rex, Hamm, Woody, Sarge and Etch etc.
According to Spanish university study - Debian's 283 million lines of source code would cost US $10 billion to develop by proprietary means.
Debian is also well known for stability and many new distros based upon Debian such as Ubuntu. Today, Debian turns 15 - HAPPY BIRTHDAY!!!