If you are interested in astronomy and just like to watch the stars at night and wondered what is the name of the star, you have to check out this software – Stellarium (now in v0.10 beta) and it is open source as well and once installed, it does not need internet connection for viewing.
My 4 year old son loved it from the very start and busy clicking on the various stars, planets and nebulas. It is a mini planetarium on a small version