This powerful cell phone is at the forefront of a technology revolution, with the ability to transform into a laptop or a desktop. Someday we might all carry a little brain in our pocket that pops into a dock and becomes a desktop, a laptop, a tablet, or a phone, all sharing the same CPU, and storage. But today, these options are pricey with the Atrix.

Standing alone, the Atrix is a solid Android phone, but the optional laptop and desktop docks are what make the Atrix a game-changer. The laptop dock looks like a true notebook, but is just a shell that you plug the phone into. Suddenly, the dock comes to life with a full-fledged version of Linux that’s running Android in a window. The desktop dock is a small cradle with three USB ports, an HDMI port, a power port, and a headphone jack.

As a phone, the Atrix has some bugs that make it not ideal for beginners. The HTC Inspire 4G and Apple iPhone 4, which remains our Editors’ Choice for AT&T smartphones, have more stable and mature interfaces. But for adventurous types, the Atrix simply does what no other smart-phone does, and that alone is impressive.