What info do you guys want to store in contacts?

Here is what we have now:

Group:
Caller ID / Title:
Firstname:
Lastname:
Company:
Address Line 1:
Address Line 2:
City:
State:
Zipcode:
Email:

Then you can add as many "phone numbers" as you want and label them freeform. Like a cell, work, home, etc.

Should we just drop the address stuff? Just thinking I probably wouldn't use that piece and would like something clean and simple if I were a customer, but if people want to store it, that's cool too.

Is there anything else that would be useful/helpful to store?