well i know that there are probably 1000 different blogs on this subject but mine is going to matter. walt was wanted by the others in season 2 because he was "special". i believe that this means he was the only one out of the others who could detect and/or repel the mib. i believe this because why else would they want to keep him and do a bunch of tests on him? i think that he will return to the show in the final season to confront the mib and become the new jacob. that would just be awesome! if he does not come back, i will be really pissed! comment and post your theories now!