I know the entire earth is currently having a collective orgasm over Rockstar’s Grand Theft Auto IV, but Nintendo’s next offering should not be overlooked. Though Wii Fit launches 19 May here in the States, the hype train is already on the move.

CNBC recently did a segment on the game, pitting a grumpy, misguided Mark Haines against the cool reasoned analysis of Wedbush Morgan Securities’ analyst Michael Pachter and CNBC’s own Jim Goldman. Haines, decrying Wii Fit supposed inability to provide social interaction ignores the fact that that’s the Wii’s major appeal from the beginning has been that very social interaction. It becomes obvious fairly quickly that Haines has never seen a group of people falling over themselves playing Wii Sports.

The key moment in the piece was Doctor Justin Liu’s confirmation that Wii Fit is “the real deal” in regards to fitness products. There has been a fair bit of suspicion on that point, and it will be vital to the continued success of Wii Fit that those suspicions are quelled.

Wii Fit has already won over 2.55 million people since its launch in Japan and Europe, and the U.S is likely to see similar sales trends. The game is already topping Amazon’s list top-selling video games, and it hasn’t even launched yet.

A part of me wonders, however, how well a product like Wii Fit will do among the non-expanded core gamer demographic. I suppose it’s something that will will see in a few weeks. Either way, Wii Fit is going to make many people fit, and those at Nintendo very happy.