Wii Fit (Wii, 2008)

Amazing game, its a lot easier to work out with an unbiased computer telling you how you're doing than a physical trainer (cheaper too). it's able to keep track of your weight, for at least a year, and can show you extensive graphs of your and other family members' progress, which i love most. it tells you what you need to focus on after analyzing your workouts, reminds you when you should take breaks, and has a lot of fitness and dieting advice and tips, which really help. for some reason i can't get myself to jog around my block or use a treadmill, but i have no problems staring at my wii for 20 minutes, and jogging in my living room. it will have you sweating, and it will be hard to walk after the first few 30 minute sessions.