The Khan Academy has great videos for learning a wide range of sublects, from chemistry to the financial crisis and maths to venture capital.
Along similar lines, and featuring a broader range of subjects, is MIT's Opencourseware, a pure gem.
Sixty Symbols is a brilliant channel run by the University of Nottingham that covers various ideas from physics. Some are a bit basic, but others, such as the ones on angular momentum and the Hall effect are very useful for understanding course material.
If you want to keep up to date with goings-on at CERN, an easy way is to watch their periodical news updates on CERN TV.
Freddie Wong posts weekly videos that are really entertaining & show remarkable special effects.
If you want to know what's going on in the world but don't want to buy a newspaper, then I recommend BBC News.
Hit the road is a great website that gives you a route on Google Maps between any two points in Dublin. It uses a combination of Dublin Bus, Luas & Dart Services.