Ok, All UK people probably already know this.
BBC play all their World Cup matches and Tennis games that they show on their BBC channels, live online.
They also do that for snooker and tons of others.
To watch them just go to
http://news.bbc.co.uk/sport/
and then whenever a title says LIVE: at the the start of it, then you can watch it live online. Just click on the title and then you will see a little yellow thing saying VIDEO, click that and watch it live on your computer
Forexample, here's the England vs Portugal match
http://news.bbc.co.uk/sport1/hi/foot...06/4991618.stm