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Back in February, according to the NPD Group, an odd thing happened to Wii Fit for Wii, and that is this: It surpassed Halo 3 for Xbox 360 in US sales. At 6 million to 5.9 million, this is a subtle but significant milestone for Nintendo's little white system that could.

For one thing, it shows that Wii owners aren't necessarily so just because they're frugal; Wii Fit cost about $30 more per unit (it comes with game software and that balance board hardware, after all). Furthermore, Wii Fit has been on the market for 8 fewer months, so it's selling faster, too.

Also, Nintendo has somehow managed to make Yoga a more mainstream video game premise than the ubiquitous first-person shooter genre. It's just weird no matter how you look at it, but there it is.