This cool tool is a specialty screwgun. It uses a strip of screws which saves time by having them all in one area.

The screws feed in through the bottom of a channel attached to the gun. Set the first screw on the strip at the second position, so that when the gun is advanced it'll be the first screw to go.

Note: The nose of the gun can be set to use screws of different lengths.
This screwgun also countersinks the screws so they're easy to hide with drywall mud. Adjust the depth of the drive setting to countersink the screws to the depth needed.