Cats and dogs are playing together. Lucifer is hurling snowballs at Adolph Hitler in a dark, hot place. And in the hidden laboratories of PDA maker Palm is a device so secret and so unexpected that few people believe it's real. But it is (most likely) real. What is this wonderful device? It's a Treo 670 phone/PDA that runs Windows Mobile--that's right, the Pocket PC OS-- not the Palm OS. Verizon will allegedly offer this mutant offspring of Palm and Windows Mobile. The device will sport Windows Mobile 5.0, Bluetooth support, and an integrated 1.3-megapixel camera.