James Cameron's Avatar it seems is well on its way to becoming the highest grossing movie of all time. It has crossed the 1 Billion USD mark and currently ranks No. 2 in the all time list behind Cameron's own Titanic. Anyway you look at it, James Cameron is indeed the king of the world with having both the No. 1 and No. 2 box office blockbusters of all time.
http://www.imdb.com/boxoffice/alltimegross?region=world-wide
