Just like the Energizer Bunny, many of our early space probes seem to be ticking along way past their original lifetime estimates. According to
an article in Scientific American, the Deep Space Network recently reaquired the Pioneer 10 spacecraft which had not been contacted in nearly eight months. Not bad for a spacecraft that was launched on March 2, 1972.
But the professionals aren't the only one's who can make probes which last and last and last.