When Pooh’s Heffalump Movie was released – at a time when even Pixar Animation Studios had ventured into PG-rated territory with The Incredibles – it was nearly impossible to find big-screen fare for the smallest ones in the house. Winnie the Pooh filled the void. This third feature based on A.A. Milne’s classic characters enfolds its young viewers like a favorite blanket. I can’t think of a gentler way to introduce a toddler to the movies.