If you love shopping online especially at Amazon - try this nifty app that has "Amazon Remembers" feature which allows you to take a photo of an item with the Iphone camera, upload it to http://www.amazon.co.uk/ to search for similar products matching your picture. How cool is that.
Price: Free
Home Apps - Remote (App name: "Remote")
Turning your iPhone into your very own iTunes remote you deftly navigate through the music on your computer or flick through the channels on your Apple TV. Swish.
Price: Free
Reference: http://www.t3.com/