Some of you may remember many moons ago when Apple introduced the Newton. In all fairness to the device, it was a nice concept, but it just didn't quite hit the way Apple had hoped. Then again, Cupertino didn't have Steve Jobs a.k.a. Mr. Apple himself running the business at the time, and who knows if that has anything to do with it, but the guy has a knack for getting products out there and pushing them in a way that makes people truly want them.
Despite the device being a commercial failure it does have its following. There are some out there who still love the Newton and stick by it. For them, there is Newton "Einstein" running on an iPhone 4: