Use floodlights to blanket large areas with light -- for example, outdoor areas you intend to use for hosting parties, backdrops on stages or the dance floor at a wedding.
Spotlight items or people you wish to accent. In your home or garden, use spotlights for sculptures or plants you are specially displaying; on stage, spotlight people singing solos or speaking soliloquies; or at a wedding, spotlight the bride and her father during the father-daughter dance.
Play with color to create mood. Both floodlights and spotlights are available in many shades. Some suggestions include using blue floodlights to illuminate a nighttime garden or a red spotlight on a solo dancer.
Mix the two types of lighting to vary the effect. For example, light a wedding reception with dim golden floodlights, and spotlight the cutting of the cake in a color that coordinates with the event's decorating theme.