Screen Grabs chronicles the uses (and misuses) of real-world gadgets in today's movies and TV. Send in your sightings (with screen grab!) to screengrabs at engadget dot com. Whether you're a fan of CBS's Elementary spin on Sherlock Holmes or not, it sure gave a nice amount screen-time to cellphones in its pilot. While there was prominent use of iPhones in the episode, we're highlighting a seemingly forced