Yeah you can get in shape with a bow Flex although I would neveer recommend them for your primary workout. It has always been my experience in the past that those that worked out at home never stuck with their program for all that long a period. There just seemed to be to many distractions that can get in the way. Like Pete, I would have to agree that there is little comparisions from the workout that you would get from a bow flex and the workout you would get from free weights. It all really depends on your goals. The gym in itself is a motivational place where I can feed off the knowledge, experience aaaaand the energy of others that makes my workout so much better. Now if you came to my house I 'm not saying that you will not find steel plates laying here and there. I love working out at home but I do not use this as my primmary workout. I just use them to get that pumped feeling every now and then or to grab a quick set between commercials while watching TV.
Tobey