Industry leaders including Microsoft and Apple believe touch will play a pivotal role in the way we interact with tomorrow's computing devices -- and it already does. Touchscreens exist in seemingly every electronics segment, including cell phones, notebooks, and even printers. Touch is available on consumer desktops, but it's still a niche market. Will that change? Are touchscreens only practical on slate devices or will the technology oust keyboards and mice to become the primary mode of interacting with PCs? Discuss.