Applications which run on mobile devices have special user interface requirements. I think Apple did a great job introducing innovative controls on the iPhone/iPod touch platfor
pocketwit is open source and has a cool interface
http://code.google.com/p/pocketwit/
Kinetic List - The main list implements "kinetic scrolling". Side Menus - Action menus are located to the sides of the main menu. So if you drag the list to the left or right, you will see the a menu of actions beside the list.