Design guru and critic Stephen Bayley came to prominence in the 1980's curating the Boilerhouse Project at the Victoria and Albert Museum and later created London’s Design Museum.  In the 1990’s he was briefly the creative director for a notoriously expensive and bureaucratic public boondoogle called the Millennium Dome (now the 02 Arena), and in 2007 he became The Observer's architecture and design correspondent.  We talk about what makes an architect a starchitect, his dust-up with Zaha Hadid, and his appearance on Top Gear, a world-famous BBC car show that’s still running, barely, like a 1977 Ford Capri.