For all Windows Mobile Bubblebreaker fans, now on Silverlight
Bill Reiss, an XNA/DirectX MVP, has ported his Dr Popper game (like Bubblebreaker on Windows Mobile devices) from XNA over to Silverlight 1.1.

Now I can waste hours trying to get a high score on my browser on any platform as well on a mobile device, anywhere - fantastic!
Link to Dr Popper Silverlight game
Bill is also writing a number of articles on Silverlight games programming over on SilverlightRocks.