Just noticed that Angry Birds is now online at http://chrome.angrybirds.com 
Plays pretty well in Chromium Browser. Takes a tad longer to load in Firefox. Most people seem to be able to play the game. Some though appear to have some graphic issues. I'm using the fglrx driver along with Flash 10.3 RC without issue. Check it out if you need a little time waster. *Warning* Game can be addictive. Level 20 here I come!!!