Top ten off switches

#7 - Lieutenant Commander Data's leg
Yes, you read that right, one of the best off switches ever is fitted to the android from Star Trek: The Next Generation. Data, as he's known to his friends -- seen here snogging the face off the Borg Queen -- had one secret he only told a select few people. He could be deactivated with a power button on his leg.

And you can see why he didn't tell many people, can you imagine all the practical jokes people would play? Switching you off while you were sleeping, so you miss that early morning shift at work, or maybe even turning you off when you were carrying something heavy.

We've never actually seen Data's off switch -- it was generally activated through his clothes -- but we think it's likely to be a recessed two-position slider switch, possibly with a blue status LED.