Still... there's something familiar
about this place. I feel like...
I don't know...
STRANGE VOICE
Feel like what?
LUKE
(looking at the
creature)
Like we're being watched!
I think Luke senses Yoda as the fimiliarity, not Dagobah.
His reference earlier to something out of a dream was either a) seeing Yoda at birth or b)seeing Obi-Wan's spirit near death. He hasn't told anyone he sees Ben, and his hesitance to tell R2 reaffirms that he still isn't sure if he saw what he saw. The planet being where he thought it would be, his going there...all seems to be matching the 'vision' or dream he had.