Polarbit is on a roll with their BlackBerry PlayBook game releases. Their latest three are some slick games that look like they were developed with the native SDK though not quite on par with the top of the line games. More like somewhere between Flash and Native. My favorite currently from them is Badaboo which is an addictive puzzle game. The Family Pack game also is nice since it includes 7 games in one including pool and more.
Here are the latest 3 titles: