Fitclub
Fitclub is an interesting product from a startup called Pantometrics. Install it on an exercise bike and it will record your performance each time you exercise. Every time you hop on the bike you can race against your past performances in a 3D virtual world. It also displays a wealth of statisical data. And it’s a Java app! They are currently looking for Java pogrammers experienced with JOGL, if that applies to you.