Traditionally the BlackBerry is seen as a more serious business device, while games are seen more as a strength of the iPhone. However the most recent app store report from Distimo actually points to game companies targeting the BlackBerry first.
In a section showing the application count of the top five cross platform publishers three (Gameloft, Electronic Arts, and Glu) all showed more applications available for BlackBerry then any other platform. A fourth (Handmark) showed BlackBerry even with iPhone and well ahead of Android. Perhaps BlackBerry is not quite the games wasteland that it is often thought to be.