Spirit, NASA and JPL's Mars rover, one of the great triumphs of contemporary space exploration. After a lot of failure, the expectations were set low, so when it's said that it lasted 20 times longer than "expected", it perhaps overstates things a bit. But no matter the numbers, Spirit did the job of pushing past the demoralizing failures of the Climate Orbiter and Polar Lander, and the abject tragedy of the Columbia disaster. As someone with the word "engineering" in the name of my degree, I couldn't help but be captivated and vicariously thrilled by the success of the little guy. Bravo.