Videos are great during those cold months, or when you just don't quite have the energy to get outside or drive all the way to the gym. I have also found that they are kid friendly. Russ actually does them with me sometimes.
BUT there are A LOT of LAME workout videos out there. This one is not! After using this video regularly, I could really tell that I was stronger and more fit. It also has three 20 minute workouts that address both cardio and strength training, so you can do just 20 minutes if you are in a hurry or do more than one if you REALLY want a workout.

But just so you know, these workouts are not easy. Think pushups and squats until your muscles are screaming. Jillian has some others that I haven't tried yet, but I plan on it because I trust that she is going to push me hard!