Whether you are young or old, listening to old time radio shows can be very entertaining. I'm a very nostalgic person; I've collected old mementos, books, postcards, newspapers and magazines from time to time. I also love to listen to old time radio shows from the 1930's, 40's and 50's.
One of the nicest and least expensive (how about free?) sites on the Web that allows one to listen to streaming audio of complete shows is "Old Time Radio Fans". The broadcasts are organized by genre and they also have a great collection of very old radio commercials.
Check it out and tune it in!