Save a number during a phone call How can I save a number during a phone call? The scenario is that I'm calling someone to get the phone number of someone else. If I just type the number in the dialer, it disappears when the call ends. 

Opening some kind of notepad application is cumbersome both saving and retrieving: tap home, tap applications, find the application, start a new note, type number, end call, copy number, paste number into the dialer (how to do the last step is another question)
I found that Number Saver is the closest to a solution. It adds an icon to the notification area when on call and will even automatically switch to speakers when run during a call