Credit: History Channel

Air Date: Monday 8/1

Us Rating: **1/2

Why is this reality show, about the tough buyers at Las Vegas' Gold & Silver Pawn Shop, so popular? Credit its offbeat stars: crusty gramps Richard, affable son Rick and mellow grandson Corey. The guys don't exactly exude Antiques Roadshow-level expertise (tonight, an antique cannon is "a nice, quality piece"), but it's fun to watch them make a deal. (History, 10:30 P.M.)