Not some, all of the playable races in D&D look similar enough to the humans. That's why I disagree with the 'elves are an alien species' argument; there is nothing alien about them.
It looks like you misunderstood my point. I write that elves are different from humans, albeit with some fantasy clichés. But at the same time, I do not believe that we should reduce all cultural and physiological differences to sharp ears and thin physique. However, if the "fantasy non-human race" needs only tentacles and colonies united by a giant psionic brain, that's your business.