yeah, I was thinking along the same lines...maybe Ben tells everyone, "I'll go ask Jacob what we should do, he'll know..." and then he goes off by himself and plays his XBox 360 for an hour, then comes back and says "yeah, uh, Jacob says we should do this..."

Or, and this is really out there, maybe Ben is a split personality, and Jacob is another part of himself, and he talks to himself...

Or I'm just nuts...but I do like the idea that Jacob is not what we are going to expect...