Do yourself a favor, click on the multimedia tab and spend a few minutes looking through NASA's images archive. Lot's of interesting and mind bending pictures.
Use this website to explore a little closer to home. Once again great pics, great videos, and over 120 years of exploration of our planet.
Did you ever wonder how they get the lead in your pencil? How about how your ipod works? You can find the answers to these questions and a lot more here.
There are probably very few things actually worth watching on TV. Most of things that are worth watching on the Discovery Channel. Lots of good clip from lots of good shows.
The University of Utah has a tremendous site that includes lots of fun and interactive applications that explore many different facets of genetics.