Inhaltsangabe-The Physics Of Listeria Propulsion. -Biophysical Aspects of Actin-Based Cell Motility in Fish Epithelial Keratocytes. -Directed motility and Dictyostelium aggregation. -Microtubule Forces and Organization. -Mechanisms of Molecular Motor Action and Inaction. -Molecular mechanism of Mycoplasma gliding - a novel cell motility system. -Hydrodynamics and rheology of active polar filaments. -Collective effects in arrays of cilia and rotational motors.