Here's another one of these Swiss-army-knife pieces of exercise equipment that gives you a non-nominal range of exercise options with nothing more than one doorway and one piece of hardware. And not only is this a multi-faceted exercise station it is perfect for a range of starting fitness points. I've had now for a few months and have found it to be a great supplement to my "motley crew" of a home gym.
I particularly enjoy the ever-present opportunity to finish off just about any shoulder/back pullup exercise with a few "last thought" biceps curls/pulls. The way this station is set up also seems to be perfectly suited for super-setting: you go from free-fall pullups to "australians" to stationary ("milking" your strength to the last drop - approximating the kind of exhaustion you'd get from the "negatives" paradigm).
A word on the "psychology" of this piece of equipment: once installed in a doorway with moderate daily traffic, the pullup bar, in its conspicuosness, becomes one of those exercise-in-passing opportunities as you shuttle back and forth with your daily activities. A set of pullups here, a set of pullups there - it adds up (even if not to a systematic muscle-building routine, then at least to a nice back stretch).
In sum, it's an attractive, easy-to-install and easy-to-uninstall exercise station that gives you a quality burn.