Jen let us know about Groovy Notes which is making some headway as a BlackBerry PlayBook diary throwing in some nice visual flair. It lets you take notes, lists, audio recordings and more in a sort of datebook. They try to do their best to replicate a day planner though it is missing some of the more complex features you would find in a more established app.
The Groovy Notes app is available now for the PlayBook in App World for $4.99. Let us know what you think if you pick it up!