Pulling memory cards and downloading pictures? A pain. Keeping track of a drawer full of different-sized battery packs for your travel, studio, and video cameras? A headache. If that's you, Canon's Cross Media Station could be a big hit of aspirin. Finally shown to the world after being teased at the Canon Expo last month, the prototype device looks something like a chubby scanner from a dark future. However, the top is actually an inductive charging pad. Set your camera up there (up to three at once) and a blue light will pop on to indicate flowing electricity. While the power heads one direction the data goes whizzing by in the other, pictur