In the year 2005, Exxon Mobile reported annual income of $36B, becoming the top earner in the history of the American corporate world. Well they did it again, the annual income of Exxon Mobil for 2006 was $36.5B. The 4th quarter results were lower than expected by 4%, but the record annual profit made up for the lower than expected last quarter. 
With this the company has widened its lead over Walmart as the company with the largest revenues in the USA. Oil is definitely the gold of this century, and perhaps the next too.