Nintendo DS accidentally broadcasting to TV?

Haven't noticed this on any of the, you know, dozens of TVs we have strewn about Engadget HQ, but at least a few people have now reported being able to pick up a weak video signal from their Nintendo DS on a TV set (which is being picked up by its antenna, of course). The DS does have built-in wireless networking (basically a proprietary version of WiFi), but it'd be incredibly weird for an analog TV to be able to pick a WiFi signal and translate that into any sort of recognizable video. Best guess we've heard: what people are seeing is some faint spill over from the VGA video signal that's being sent to the top screen of the DS. Or your DS is haunted.

[Thanks, Jesse]