Strider Balance Bike
We got one of these (or at least, Santa did) for our 2 1/2 year old. It is amazing how quickly he took to it. When it is time for him to ride a real bike, he won't need to start with training wheels. This is a great concept. I really wish I had known about these when our oldest son was learning to ride.
We got this one for our kid at www.kidsbikesntrikes.com . Never new that my boy was such a fast learner.