If you want to practice your listening skills and know more about different subjects, such as business, technology, arts etc, access the site http://www.ted.com/. Is has many video files, with talks by personalities in different areas, which usually last from 5 to 20 minutes and you can watch them online. The best part, it's free!
There's also a Brazilian version, http://www.tedxsaopaulo.com.br, with talks in Portuguese.
