In this paper we review the current situation regarding the study of the metallicity-giant planet connection. We show that planet-host stars are more metal-rich than average field dwarfs, a trend that remains after the discovery of now more than about 100 planets. Current results also point out that the planetary frequency is rising as a function of the [Fe/H]. Furthermore, the source of this high metallicity is shown to have most probably an original source, although there are also some evidences for stellar pollution. These facts seem to be telling us that the metallicity is playing a very important role in the formation of the now discovered giant planets. We further compare the orbital properties (minimum mass, period and eccentricity) of planet hosts with their chemical abundances. Some slight trends are seen and discussed.