Nintendo has underestimated the demand for their soon to be released Nintendo DS TV Tuner. The TV Tuner is to be released in Japan on November 23rd for 6,800 yen (about $60USD). Since the peripheral is not a game, Nintendo started to accept orders without making prior announcements regarding placing orders which started on November 8th.
The TV Tuner allows the DS to pick up Japan's 1seg TV broadcast service. No word if a TV Tuner would be released in the US or in Europe but it is available for purchase at Play-Asia.
Here are some images of the TV Tuner.
More images are available via the source link below.