Conducting polymers are now widely regarded as potential candidates for various technological applications. For more sophisticated molecules-based devices, molecular control may be required and this has prompted a number of research groups to investigate techniques such as the Langmuir-Blodgett (LB) and self-assembly for producing supramolecular structures with controllable architecture. An issue of primary interest is the processibility of conducting polymers, especially in the context of the LB film fabrication. A review of the main engineering strategies for processing conducting polymers is provided here, building upon our experience in dealing with parent polyaniline and its derivatives. Special attention is devoted to the approaches for fabricating stable Langmuir monolayers on aqueous subphases which can be transferred in the form of uniform Langmuir-Blodgett films onto a variety of solid substrates. The optimization of experimental conditions for spreading stable monolayers usually requires extensive monolayer characterization and this is usually done through surface pressure and surface potential measurements and stability experiments. As for the types of material employed, problems and prospects are discussed of the LB processing of parent conducting polymers, without attaching builder substituents or adding builder materials. The usefulness of the mixed LB film approach for obtaining improved transfer of monolayers is discussed, with particular emphasis on the maintenance of the principal polymer properties in the composite film. New developments in the use of oligomeric counterparts of conducting polymers are highlighted. A survey of the main structural, optical, electrical and electrochemical characteristics of conducting polymer LB films is given, including results from our own group in comparison to those presented in the literature over the last few years. Results are also discussed with reference to data available for thick cast films or bulk samples of conducting polymers. We describe experiments in which LB films from conducting polymers may suffer post-deposition processing that alters their doping state and/or conductivity. The potential applications of LB films from polyaniline are also discussed.