What is the name of the ice planet in 'The Empire Strikes Back'?

In which fictional town does 'Jaws' take place? In which fictional town does 'It's a Wonderful Life' take place? In which fictional town does 'Halloween' (1978) take place? What is the name of Luke Skywalker's home planet? What color is the pill Neo takes in 'The Matrix'? What speed must the DeLorean reach to time travel in 'Back to the Future'? How many gigawatts of power does the DeLorean need to time travel? What is the name of the ship in 'Alien' (1979)?