New opinions and ideas are always good to add to the mix, but anything of real substance would be picked up by one of the mainstream parties anyway. I find him quite amusing and his party suffers from not having the resources of the others to weed out any undesirables from within his own party...
I agree there's little to choose, or for that matter like, out of the other leaders, but I dread to think what a mess this rank amateur would cause if he ever had any real power. He may come across as passionate, but it doesn't make him right.