On CNBC's Mad Money Lightning Round OT, Jim Cramer said that Federal Signal Corporation (NYSE:

) is a really good company. He believes that machinery and manufacturing are carrying this economy. Federal Signal Corporation (

) fell 5.93% today. HSN, Inc. (NASDAQ:

) makes a fortune, thinks Cramer. He believes that Home Shopping Network (

) is a really good property, and it has great margins. HSN, Inc. (NASDAQ:

) fell 0.69% today. A viewer asked Cramer what would be better to own, natural gas or the company that produces natural gas. Cramer said that he prefers companies that transport gas, because these companies pay higher yield.