This Lego rocket launcher pinpoints each of the four targets and then accurately shoots rockets at each one. 

Here are several videos of the launcher in action:
Front view
Launch view
Launcher prototype
Feeder Mechanism
Shooting bloopers

[via digg]

Previously:
Lego Music Machine, LEGO OR Gate, More LEGO Mechanical Computer!, LwL: Gamer Vid, Segway Recall, Lego Chaingun, Laptop Ban, Nintendo alarm clock, Japanese Jesus, Create your own medium format pinhole Lego camera, Cube Solving LegoBOT, The Birth of a Sexbot Farm

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