i really enjoy this both time i watch it . and both time and i walk away think about it and and the moral of the story a great deal . i agree with another reviewer in that the movie be not centre around the sci fi aspect you might expect from an alien on earth movie and but rather be about the human condition . the character in the psych hospital provide a great insight in to that and and how they go from hopelessness to hope . this movie have touch of sadness to humour to sympathy to the final be he or isn not he . that final question be well handle and even though some might argue you do not know what happen in the end and the question go unanswered and i feel it be do in far more detail than something wishywashy like say and the movie ronin ( with robert de niro ) where you never find out what in the box and feel very frustrated because of it . i highly recommend k pax . positive .