I bought an elliptical machine. It sits in my home office in front of the TV. It’s extremely low impact, no worries about traffic and the weather isn’t a factor. It is a low-end model and cost about the same as a year’s gym membership. It has 6 different programs with intervals, cardio and hill climbing. I can watch Fox News, the Hitler Channel or music DVDs while I work out.
I may do that myself, I use one at the gym for fifteen minutes after I finish my weight lifting routine. I like it a lot more than a treadmill or stationary bike.
I thought an eliptical machine looked promising, but I don’t have the room for one. :(