Clear by Realmac. It's an interesting minimalist interface and is quite easy to figure out. And it has a high coolness rating. We'll see if it supplants my many other reminder and to-do apps. Todo Lists, Web Wonder, Iphone App, Task Management, Clear Task, Interactive Design, Clear App, Clear Iphone, Website Design
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HTML5 Clear by Evan You. A HTML5 replica of the awesome Clear iphone app (UI only). I was fascinated by the innovative gesture controls and wanted to see if I can implement the look and feel in HTML5 using CSS3 transitions. Didn't get 100% of the details, and there are a lot of bugs, but it looks pretty close.