Forget the age-old tricycle. Exercise and learning have gone high tech. The Smart Cycle from Fisher Price (Ages 3-6) is a stationary bike, a learning center and an arcade game system all rolled into one. Smart Cycle plugs right into your TV, "ready to take kids on learning adventures like no other," the company says. As kids pedal, favorite character friends guide them through learning discoveries, games and even exciting races. (www.amazon.com)