The nationwide search for America's next big invention continues with open casting calls in Houston and Tampa. Viewers will witness inventors pitching their ideas and products to the panel of expert judges to see if their dreams will be realized. Highlights include an 80-year-old World War II veteran pitching his idea -- hoping to validate a lifetime's devotion to product development; a Florida hopeful's device designed to help busty women; an obsessed inventor trying to give a board game company a run for its money; and a real estate mogul -- inspired by the hurricane Katrina tragedy -- giving an emotional pitch for a revolutionary method of building inexpensive, indestructible homes. The panel will weigh their decisions as they choose one finalist from each city to continue to the next level.