Filamentary, my dear Watson

Developments that took place in the area of sculptured–thin–film technology after {\em Bianisotropics '98/} are reviewed here. Devices addressed include: optical filters of various kinds, laser mirrors, gas–concentration sensors, optical interconnects, interlayer dielectrics, and biosensors. Pulse bleeding is related to the circular Bragg phenomenon in chiral sculptured thin films. Acoustic research is also identified.