Until I got the BB8830 in January, I used an HPLX200 as my PIM -
appointments, calendar, contacts, etc.
If I was going to try scheduling a doctor's appointment or meet a
friend, I would look up their name and phone number. After calling
them, I could Press a key from the Contact/Phonebook and the Calendar
application would open and their name/phone number would be placed in
the Description field. It could copy the address/location, too - all the better.
Then I would just set the time/date for that appointment.
Currently, with the BB, if I wanted to do the same thing, I would have
first open the Calendar application, then COPY their name, paste it into
the Calendar, then copy their phone number and paste it. It is not
Actually, PocketDay for the BB has a similar function but it is a
large application and I don't need anything else it offers (weather,
stocks, messages, etc). What is does is ADD an entry to the MENU
list while viewing the Contact's name. You Press the Menu (blackberry
key) and in the list of options, there is a new option: something like
Schedule an appointment (I don't fully remember because I removed
Pocketday). When you choose that menu item, the Calendar opens and
doctor's name/phonenumber is now in a Calendar entry and you just fill
out the rest of the scheduling information.
It just really simplifies entering an appointment while on the phone talking with the doctor's office (or a friend, whatever).
Obviously such an application is basically hidden. Adding a Menu Item to the Contact application, opening the Appt application and doing copy/paste in the background.