This weekend the BBC World News programme "The Culture Show" is titled "Lego: The Building Block of Architecture". From the trailers I've seen so far I'm not sure how much of it will be about actual Lego and how much about architecture, but it will include a visit to a Lego factory.
The show will be broadcast on Saturday at 03:30, 16:30 and 22:30 and Sunday at 10:30. All times are GMT. Check the schedule for your region if you don't want to do the math yourself.