This morning, the Jets made official what everyone already knew yesterday: The Jets will be on HBO’s Hard Knocks this season. We’ll confess to having never watched the program: We are crazy enough to restrict our sports reality television viewing to actual live sporting events. Nevertheless, people seem to like it, so if that’s your bag, go to it. Meanwhile, the Daily News’ Rich Cimini points out that the main reason the notoriously secretive Jets are agreeing to letting HBO cameras in is … unsold PSLs. Because nothing makes people rush through the turnstiles like a preening Rex Ryan, fresh off his lap-band surgery.