又名：外星人报道 第四季 / 笑星撞地球 第四季 / 外星家庭 第四季 / Life As We Know It Season 4 / Third Rock from the Sun Season 4
剧情简介：A group of aliens has come to Earth to learn about its population, customs, etc. To avoid detection, they have taken on human form which gives them human emotions, physical needs etc. WITHOUT the understanding of what they mean or the inhibitions normally present in humans. Their leader takes the position of a college professor, their military expert as his sister, their intelligence expert, supposedly oldest of group takes form of his teenage son. The uninhibited reactions turn everyday events into unusual situations.