What Are Your Favorite iPhone Apps?

Calling all iPhone users, it's CJ, and I would like to know what are your favorite iPhone apps.  You may have heard Debbie Ray and I talking about my new iPhone 4s on the air (yes I finally parted with my Nokia classic brick phone).  Siri and I have been spending time getting acquainted.

One of the top free apps right now is 'Draw Something'.  And of course 'Angry Birds' is like Pac Man was way back in the day and  is destined to become a classic.  Everybody has an opinion as to what the must have apps are...I bet you have a favorite.

Please let me know what apps I just won't be able to live without.