Natural gas prices are lower than ever.  Bernie Anderson says it's the lowest he's seen in the 32 years he's worked for Nicor Gas.  He says the mild winter created a low demand for all of the product.  Prices are only 22-cents per therm right now, which means major savings for customers.  Anderson says now might be a good time to sign a long term contract for your natural gas supplier.  But he says customers should check out all their options and don't do it in a hurry.