I have an stationary bike in my basement, Lifecycle brand, a pretty good one. I also cycle outdoors in our spring, summer, fall (can't now in the snow.) I also go to a gym.
I used to love running but my knees can't do it anymore, I have to get my cardio from bikes and other low impact machines.
To the guys who were discussing inspiration for running earlier - you're missing the obvious: Pre. just see that movie, or think about him when you're running. (That is, think about Pre the runner, not the driver.)