Way back before Apple unveiled the original iPad, your only choice for getting an Apple tablet was to buy a ModBook: converted MacBooks with built-in Wacom digitizers that operated like the tablet PCs of old.
Of course, once the iPad debuted, a lot of the market for the ModBook dried up, but now they’re back with the ModBook Pro, which takes the 13-inch MacBook Pro and turns it into an OS X-running tablet.