The squid creature you are referring to was from the Discovery channel special on 300 million years in the future (The Future is Wild). It's interesting, but ultimately just mental masturbation. Any animal could have filled in that niche, they just picked a squid to be different.

My post was describing how aliens could look very similar to us purely because evolution of a sentient species (theoretically) requires bilateral symmetry, forward facing eyes, bipedal locomotion, digits on the hands and a chest cavity large enough to hold several sets of internal organs, all for reasons that make perfectly good sense when guessing about a species arising on another planet.

Just because they look like us doesn't mean they're from the future, it just means that evolution works in similar ways on separate planets.