Bill: Ha-ha, I think that you must see many films about ET.

British scientist Stephen Hawking is worried that any extraterrestrial life we find is likely to be a creature out of the movie Predator, not ET.

As a science fiction buff, I'd be much more impressed if we found an alien organism that has blood that is so corrosive that it dissolves metal — as imagined in the 1979 film "alien."