Everything we can directly perceive with our sight is contained in a band of light about 400nm across. This band of light happens to coincide with the type of light achieving penetration through earth’s atmosphere, which, of course, is not a coincidence at all. Our sense of sight grew up around this band of light and it would be foolish to expect extraterrestrial sources of life, should they exist, to see the same band. This throws another wrench into sci-fi cliches 🙂

The same goes for any sense that depends on properties specific to Earth or the Sun. For that matter, they probably couldn’t breathe our air, either.