BHP Billiton (ASX:BHP) is one of the most widely held stocks in Australia and is often a core holding in many stock portfolios. Over the last few years the stock have reflected the fortunes of the commodities boom and as a result the BHP stock price saw a peak last year of over $45 only to come tumbling down to less than $25 a few months later. But maybe at current prices BHP is once again a stock worth looking at?