I know step aerobics is a staple in almost every gym's schedule of classes. I also know it is a little dated and dorky, but I love it. Plus, step aerobics is a great way to get your self fit for your favorite mountain sport, be it skiing or boarding.
Step aerobics is great agility training. Not tripping on or falling off the step takes some concentration and coordination. This motion will prepare you for quick moves down the slope.
All the side to side motion, stepping over the step, works and strengthens your lateral stabilizers. These are great areas to strengthen, especially if you ski moguls.
Step aerobics is also aerobic, after all. Being in aerobic shape helps you stay on the slopes longer, recover more quickly and decreases your chances of injury. You will also be working your legs a lot - step aerobic instructors seem to absolutely adore squats.
So add some variety to your winter conditioning routine. Step it up.