Such an under-appreciated piece of equipment at my gym. It sits there forlornly hoping to trip someone as they walk through the doorway. Once in awhile a "hardcore" two-hour-workout lifter will throw a 35 lb. plate on it and bounce out a set of ten.
It sits right next to the Smith machine but doesn't get a bit of second-hand action. One regular will strap on his knee braces, wrist braces, elbow braces, and cinch up his lifting belt to do his ENTIRE workout on the Smith, but still doesn't notice the seated calf machine.
So I want to hear it. What's the most under-used piece of equipment in YOUR gym?