Disney is getting back into bed with Pixar Animation  um, in a purely G-rated way, I'm sure. Walt's colossus, Reuters reports, is shelling out $7.4 billion for the studio that has produced such box-office bonanzas as A Bug's Life, The Incredibles and Treasure Planet. Oh, wait  that last one wasn't a bonanza, computer-animated or in any way Pixar-related.