As far as planning, I use my Outlook calendar. Of all the gadgets out there, cell phones, black berry's, day planners, I use my outlook calendar. I'm at work, in front of my computer all day - it's the thing that is always open. It's right there, in my face. The problem is that EVERYTHING is in outlook - totally unavailable when I'm at home. I'm trying to fix that by familiarizing myself more and more with google calendar, but darn it, Outlook is just so much more convenient and user friendly. I use outlook notes to log my monthly payments, and my calendar to schedule my personal life.
As far as keeping in touch with my family - it's the cell phone. It's where I am, at all times. My son is only 6, so it's not like we talk often on the phone, but it sure is a life saver having it.