[ame=http://www.youtube.com/watch?v=YNpPx4yVcPQ]YouTube - Make iPhone Contacts And Photos Into App Icons - iOS Vlog 213[/ame]
SBPhotoDial is a very very useful free tweak from Cydia. What it allows you to do is make contacts into app icons for your homescreen so you can one-tap call....well two taps actually, but you get the picture.
The app itself is really easy to use when you open it you have 3 steps. Step 1, you can choose a contact from your contact list that you wish to add, if not, skip to Step 2. In Step 2 you can add a name for the app icon(name you want displayed under the app), add a number, and add a photo. All pretty straightforward all the way to Step 3 you can create the icon.
The icon should appear on your homescreen within a few seconds, then you are ready to roll. go ahead, try it out, tap away!