If you receive Ovation TV, the channel devoted to the arts, watch for Adventures in Architecture hosted by Dan Cruickshank. The series airs weekdays at 4:00 and 5:00 pm (Central US time). There are few television shows devoted exclusively to the subject of architecture. True, some home improvement shows have segments on architecture from time-to-time, but few series are solely devoted to engaging the audience in the discussion of architecture. Adventures in Architecture is such a series.
Ovation TV runs many shows that feature architecture. Visit their programs page and click the link "architecture" to see a complete listing of what's upcoming on the network. Currently scheduled shows include Daniel Libeskind: The Making of an Architect, Visions of Space: Antoni Gaudi, and Renzo Piano: Piece by Piece, to name a few.
Back to Adventures in Architecture, the show originally aired on BBC2 in spring of 2008. Wikipedia offers a listing of the eight episodes and shows the architecture visited in each show. Dan Cruickshank is an architectural historian with a specialty in Georgian buildings. He has published several books on the subject.
Adventures in Architecture is recommended viewing for all students of architecture, including those who may not be formally seeking an education as an architect!