Yea, Kitco does those, they've done a great job of promoting them as a widget to websites and get lots of free advertising from it. Most any financial news site has the same data though. CNN: http://money.cnn.com/data/commodities/ Bullion Desk: http://www.thebulliondesk.com/ There are a bunch of others, I might hunt them all up and make a directory at some point. Plus, it has been suggested that I make a similar widget for Bullionist.com, which I'll most likely do when I get a chance to find the right talent to do it.
You can get a display for your task bar at Kcast for Windows - Live prices for gold, silver, platinum, palladium & rhodium on Windows PCs It is the one I use.