They are pretty cool creatures. Imagine if you were from some other planet, came here and saw an octopus for the first time (assuming you didn't have such things on your own planet). You'd not know if they were truly the intelligent rulers of the planet or not, but they sure would look very alien and scary.
At any rate, I've always wanted a pet squid. Though apparently I'd have to turn most of my living room in a giant aquarium with water recirculators.