It was a sci-fi show that gave us three years worth of catch phrases such as "Danger, danger, Will Robinson" and "That does not compute." The Robinson family took on a space adventure set in 1999 that went array, leaving them hopeless Lost in Space. Season 1 was in black and white, the other 2 seasons were in color. The program, which became more of a sitcom in the latter seasons, debuted on CBS this day in 1965. Were you watching? Enjoy the familiar opening theme song again by clicking below.