As far as American Idol guest judges goes, Neil Patrick Harris is the BEST guest judge this audience have ever seen. If you’re thinking if who will replace Simon, then this guy must be it! At first, I thought Perez Hilton suits best but changed my my mind after seeing the smart, cutting, and funny criticism from Harris. He’s so good, he gives advise, he’s not afraid of putting the undeserving contestant down – summing it all up: he should comeback next year as a permanent Idol judge – replacing Simon Cowell. This guy shines with intelligence, and his own brand of humor will be bringing a new style to the show. This is just a single opinion, so I don’t know…