I love when my gym gets a new cardio machine because that means more ways to change up my workout and combat the looming boredom. The latest addition to my gym to keep an eye out for is the Precor AMT.
The AMT does more than add variety to your workouts, it customizes movement by adapting to your motion, which means you can completely change the motion and paths of your steps without so much as the push of the button. This means that you can step in the motions of a StairMaster for two minutes and then use it as a glider for the next two minutes. It takes a little while to get used to, but I love that you can make a workout different every time rather than just doing the same thing over and over again like most cardio machines. What's more? It has a Stride Dial, which basically shows you which muscles you are using with each movement. Right now it looks like it's mainly for commercial use, but I do think it would make a great home piece (despite the fact that it's a little bulky — and pricey, I'm sure).
Look for it at your gym or pass along the information to the manager at your gym to have her look into getting one for the cardio floor.