Robonaut and Gladiator get all the attention. Understandable, I guess, since one looks like Boba Fett and the other is designed to kill people in three or four different ways.

But I think this article on the REMUS Autonomous Undersea Vehicle is more interesting. It has a brain, for one thing, whereas Robonaut and Gladiator don't. It operates on its own for up to 20 hours, and was used in Iraq to identify possible mines for subsequent examination by dolphins and demolition by human divers.