Land Mines are one of my most preferred tools in the gym. They are better for your joints compared to barbells and they can build serious rotational power. I use landmines when I do metabolic conditioning to minimize the chance of an injury. You will notice how fast they get you out of breath.
Check out video below for some exercise ideas. This video demonstrates exercises:
Single Arm Row, Single Arm Press, Alternating Chop, Splitter Row, Splitter Stepping Press, Side Skip Chop, Alternating Row, Side Skip Press, Splitter Chop, Clean Stepping Press.