Andre Ethier has been a really good player since he broke into the majors in 2006. Each year he got a little better and a little better and last year, he seemed to break through, at least on "counting" stats like homers and RBIs. His 132 OPS+ last year tied 2008 as the best of his career. But this year, he's on a totally different planet and right now, he looks like one of the best players in the National League.
Ethier currently leads the league in homers, ribbies, batting average, slugging percentage and OPS+. He's already had several walk off hits to win games this year. What is totally amazing is his performance in high leverage situations. In those at bats, his line reads: .440/.462/.770. Wow.
The only knock on Ethier is that he isn't that great a right fielder. He has a good arm and his assists have always been quite impressive. But his range and his efficiency are below league standard.
But the way he is raking? Who cares.