Because Pixar is known for so reliably hitting balls out of the park, every time, it’s hard to think of what possible angle to take in a review as its latest slugger, Up, trots merrily around the bases of the multiplex, dances its way toward the hefty box-office returns that await at home plate, and basks in the warm glow of the adoration of millions of fans. For three years now, there have been stories in the financial press alleging that Pixar’s latest is due to underperform because a) nobody wants to see a silent movie about a lonely robot; b) children don’t want to play with plush rats; or c) nobody loves old people and fat kids. That’s one reason why it’s such good sport to watch the movies rake in the dough year after year.