Touch Dial Emoji is free now. So get it.
Touch Dial Email is an easy-to-use and one touch dial /email icon on the home screen for iPhone.
Coming Version 3.5 add picture icon in email signature support
(1) Reset option in Settings App
(2) DTMF support (but * and # are not supported)
(3) Read Accelerometer data, and for the same one touch icon, it can trigger phone dial / sms dial
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If you want a second touch dial icon, get the full app "Touch Dial"
http://phobos.apple.com/WebObjects/MZStore.woa/wa/viewSoftware?id=286534260&mt=8
Experience the one touch icon for both phone and SMS in one icon on iPhone home screen
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It is free, simple, efficient and easy to use especially when you are driving.
The telephone number can be entered at the start of the Application. Then it will become a one touch dial icon for your iPhone.
* # and pause are not supported in the telephone number.