If you're wondering why robots in movies are only designed to kill, we've got some great robot news for you. These guys are designed to help the common good and they don't come equipped with any ballistic guns or self-destruct bombs.
Take, for example:
The T-34: A gentle Robocop with a net gun and no explosives.
Huggable Teddybear Robot: From MIT's lab, this bot has camera's in its eyes, a PC brain, and recognizes 9 classes of affective touch.
Forknife: This bot can be controlled by any Android phone using the Java App. Need your meat cut, sir?