It might not be the worst show, but it's probably the dumbest right now: "Scorpion".
In essence, it's about four generic crime fighters - a mechanic who is a tomboy, a math prodigy who is an overweight nerd, a psychiatrist whose character development is limited to "wears a funky hat", and a self-proclaimed genius. These four NCIS rejects - none of whom are in any way original - are billed as experts in their fields at the age of twenty-two, are routinely outsmarted by others of average intellect until the final ad break, at which point they finally remember that they're smart and contrive a solution that the audience thought of forty-five minutes ago.