Microsoft has released a free football scoreboard that will display live scores from the upcoming FIFA World Cup. You can download it from here.
It's a neat little transparent desktop client that also allows you to specify an RSS feed for a news ticker at the bottom of the window. A good feed to add is the news feed from the official World Cup site.
Also along those lines, not long ago the Dutch company Tam Tam released free SharePoint web parts for the World Cup. You can use them to manage your internal tipping competition through your corporate intranet and the results will automatically be calculated from their public website.