however , cbs has warned penny that if his rapidly gaining weight tops 300 pounds , the show will be retitled `` jake is the fatman `` at mid-season . ; -lrb- box -rrb- `` family matters , '' which became `` urkel 's family `` in its fifth season , now concentrates on grown-up nerd steve urkel -lrb- jaleel white -rrb- , who 's now counselor to his own `` family `` of nerds at an urban high school .