I feel the need to contribute to the geekness just a little bit more. It's a common misconception the JT8D is a Turbojet. It is a very long narrow engine, which gives it that look. Its nearly identical looking to the actual turbojets on the older 707s and DC-8s. Boeing was a big "fan" (no pun intended) of the JT8D. Offhand, 737-100/200, all the 727s, later model 707s. And of course DC-9s/MD-80s. Im sure there are many more aircraft that use that engine, but it's a very strong, proven engine, and makes quite a noise.
