My iPhone wakes me up in the morning instead of the traditional AlarmClock
With the Withings intelligent scale, I can keep track of my weight and all the data is transferred to my iPhone or iPad.
This is an example of the data, as you can see it keeps a history.
With an iPad with Zite or Pulse (both apps free) you can have news delivered personally, tailored to your interests and dynamically updated. Faster than a news paper.
Siri can take commands you would normally have to type and make them appointments, get data, and do searches.
Use the Clear App for iPhone for simple task lists.
Use Evernote to take notes or lists for meetings that sync back to your computer or iPhone or other mobile device
Online-real time Document collaboration can be done easily with Google Docs. It's free too.
Dropbox is a great utility for syncing your documents and having access anytime anywhere in an online environment or on any device. Sign up is free and you get 2 Gb to start with.
Use the Nike Fuel Band to track your body's daily activity and sync the data wirelessly to your iOS device.
Use Do.com to manage projects and tasks online and the iOS app to receive, assign, and manage your projects anytime, anywhere.