Here's a suggestion on PDList:

I know that you can insert a contact as part of a Task but it needs to be taken a step further and ask you to pick a phone # from the contact to call. This way, when you go to your PD List, you don't need to switch out to the address book, search for the person, pick the #, and dial the person. This would be the best enhancement for PDList that I can think of....unless you can already do this and I am a fool who could not figure this out.