1. Lectures and transcripts!
www.npr.org (National Public Radio)
2. Free Audio & Transcripts!
www.bbc.co.uk/worldservice/learningenglish
3. Pronunciation!
www.uiowa.edu/~acadtech/phonetics
4. Free Lectures from a real University!
www.youtube.com/user/UCBerkeley
5. History Videos!
www.history.com
6. Science Videos!
www.dsc.discovery.com
7. Visualize processes!
www.howstuffworks.com => better than (instead of) wikipedia.org
8. Lectures on books!
www.booktv.org
9. Focus on the Science and Book Sections!
10. More advanced articles to develop your reading skills!
11. More lectures!
12. Visual Dictionary
http://visual.merriam-webster.com/
13. Tech/Computer/Comedy Talkshows
14. Free Books (older due to expired copyrights)
15. CNN STUDENT NEWS!
16. a daily TV/radio news program
My personal preference : #1, 2, 7, 9, 10, 11, 15, 16.