On Christmas Eve the Huygens lander successfully disconnected from the Cassini orbiter and is set for a landing on Titan on January 14th. There is a good article published by the IEEE Spectrum on how Swedish engineer Boris Smeds saved the $300 million dollar mission by detecting an undetected problem in the telemetry system which would have hopelessly scrambled the data relayed from Huygens.

Good luck, and soft landings.