Ron Paul - Why?

So I understand that people on Digg.com absolutely love anything Apple, Ubuntu, and Ron Paul... Why is Ron Paul such a great candidate? I understand he is a staunch supporter of the constitution, but what else does he bring to the table? How many of his ideas would actually be feasible with the way our government is set up? What are his ideas?? I can look up how he has voted on issues like abortion and the budget, but what exactly does he want to change? It sounds like he would bring a dramatic change to the US if possibly nominated AND elected, but it seems that the baby boomers/a majority of his peers think of him as an absolute nut. Hopefully someone can help me out by commenting...