2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/181694We summarize the main motivations to study event shapes at hadron colliders. In addition we present classes of event shapes and show their complementary sensitivities to perturbative and non-perturbative effects, namely jet hadronization and underlying event.10 pages, 9 figures, talk given at the FRIF Workshop on First Principles Non-Perturbative QCD of Hadron Jets, Paris, January 2006High Energy Physics - Phenomenologytext