Compatible with iOS 4 and 5
This addon lets you add an extra contact field of your choice to be shown when you are receiving a call , e.g. Job Title, Email, URL, Address or any other field of the contact that is calling you.
It also scrolls to show truncated text if the field is too large to fit.
It is as simple as that ;)
Works on iPhone 3.x and 4.0
See More Info for Screenshots