With 'Speed-Call' you can call your friends without searching in your iPhones contacts.
You can create up to 16 contacts manually or by importing from your iPhones contacts. Simply press the icon of a contact and the iPhone begins to dial. The size of the contacts shown variies to the number of the contacts you have created. That looks good and enhances the readability.
Of course you can freely change the order of your contacts in the menue 'contacts'.