Chess Archives on YouTube
chessbase.com
chessbase.com
Garry Kasparov (former world champion) vs Vishy Anand (former world champion) in blitz: http://www.youtube.com/watch?v=Hs2ucWQjmv0&;
Sometimes I get into this "mental trench" and can spend several hours a day playing against people all over the world. In a strange way it sometimes helps me solve programming problems. Not sure how that works as it seems that I am thinking about the problem while playing fairly intense games. Maybe it simply helps get you into a flow state?