Twitter's at last found someone to be its chief financial officer, and the man appears to be more than qualified for the position. Ali Rowghani actually comes to Twitter from Pixar, where he also held the title of CFO. Pixar is, of course, the popular animation studio responsible for movies like Toy Story, The Incredibles, and WALL-E. Disney bought it in 2006 for $7.4 billion, and Rowghani was present at the time, having started at Pixar in 2001. Now,