Marshall Brain, the author of How Stuff Works, paints a scary picture of the future in his article, The Robotic Future. In 2025:

Humanoid robots soon cost less than the average car, and prices kept falling. A typical model had two arms, two legs and the normal human-type sensors like vision, hearing and touch. Power came from small, easily recharged fuel cells. The humanoid form was preferred, as opposed to something odd like R2-D2, because a humanoid shape fit easily into an environment designed around the human body. A humanoid robot could ride an escalator, climb stairs, drive a car, and so on without any trouble.

Once the humanoid robot became a commodity item, robots began to move in and replace humans in the workplace in a significant way. The first wave of replacement began around 2030, starting with jobs in the fast food industry. Robots also filled janitorial and housekeeping positions in hotels, motels, malls, airports, amusement parks and so on.

He goes on to paint disturbing (because it's completely feasible, given Moore's Law) picture of the future where unemployment is around 50%. In the height of the Great Depression, unemployment was 25%. Humanoid robots, each with roughly the processing power of the human brain, fill jobs which today are held by constuction workers, pilots, service sector employees, and even professional athletes.