Kotaku reports: "Wii Fit has legs. The kind of legs that keep it number one on the Japanese sales charts, narrowly besting one of the few new titles to debut this week in Mario & Sonic at the Olympic Games for the Nintendo DS. At this rate, Wii Fit could reach the 2 million-sold mark by... I don't know, some upcoming Thursday. Not bad for something advertised as something you sit on, perfectly still. This week's chart, from January 14 to 20, looks nearly identical to the previous week's as the post New Year release hangover subsides. Even Call of Duty 4 is still charting".