[PPCFreak]

I am using a program called CallCalendar (in the installed apps, it shows up as KingFetty.com CallCalendar).

It logs all calls, incoming and outgoing to your calendar. Has start time, end time, duration and phone number.

On the main calendar screen, it only puts Called (or Recieved), the phone number and if there in your contacts, it puts the name with it as well.

Its pretty handy and free.
My only issue is that it allways pops up in my today screen cause I have my appointments on there. Not a huge deal as it will disappear in a matter of a minute (when it things the appointment is done).