Wow. Microsoft finally did it. After years of rumors and speculation the company finally unveiled its very own laptop. Not a tablet that could replace a laptop (although there's that too), but a bona fide laptop, with an attached keyboard. Well, almost. The Surface Book, at first glance, looks like a traditional clamshell notebook with a touchscreen. In fact, though, it's more like a lovechild between the Surface and Lenovo's Yoga line. Which is to say, it has a removable display that supports pen input but, when attached, it can also flip back 360 degrees into tablet mode. Oh, and on the inside, it has enough horsepower to take on the MacBook Pro.