Recent developments in the field of particle-stabilised aqueous foams and foam films are reviewed. Reports on ultrastable foams stabilised by solid particles are highlighted and factors responsible for the extraordinary foam stability are discussed in view of the recent experimental and theoretical results. Mechanisms of foam film stabilisation by solid particles and the role of different factors in the film stability are considered. Link between the film stability and that of particle-stabilised foams is discussed. (c) 2007 Elsevier Ltd. All fights reserved.