We present a short review of experimental and theoretical constraints on the
mass of the Standard Model Higgs boson. We briefly illustrate the
unsatisfactory aspects of the standard theory, and we present some general
considerations about possible non-standard scenarios.Comment: 13 pages latex, 6 PS figures. Talk given at Les Rencontres de la
Vallee d'Aoste, La Thuile, Italy, March 4-10, 200
