Neymar is much, much more than just showing off and playing little tricks like those.
He gets silly like that playing for Selecao, but the guy is also very effective, very intelligent, finishes with both legs remarkably well.
Also, he just doesn't get injured. He gets beaten up very ugly every game, and is about to play his 60th game of season between Selecao and Santos.
It's not easy you know, to be the main player of the biggest country in football with only 18-19 yrs old... it's a huge responsibility. And he's taking it well. So far he has 7 goals in 13 games for Seleção. That'a a lot, specially when we're talking about a kid.
He's going to be a legend, that's for sure. Unfortunately, he won't leave Brazil for less than 45M, and I guess Juve can't afford him.
But I think he worths the effort... he is very good as a left wing, imagine him for Pepe. Scudetto and the future would be guaranteed.