January may have gone to the Wii and Call of Duty 4: Modern Warfare on the hardware and software sides respectively, but both were bested by an accessory as the biggest selling item, according to the NPD Group. The Wii nunchuk controller claimed that prestigious honor, selling an impressive 375,000 units in the United States.

At only $19.99, it's not surprising that Nintendo is pushing millions of these puppies out the door. All those people who snatched up Wii Play last year—4.12 million of them did—need to spend the earmarked Wii dollars on something. Wii Sports boxing is certainly no fun without it.

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