If you need to count calories, try the My Fitness Pal app. I have been using it every day since January 7th, and have lost 15 pounds. It makes it so easy to keep track of everything you eat.
I love this app. too. I used that for a long time last year. I've recently joined WeightWatchers online & their app is horrible compared to My Fitness Pal. They are both based on the same premise, but WW is not even close to being as good (and that one cost me $59 for 3 months).
My favorite apps are facebook, Scrabble (but mine was about 2.00, not free), WordPlay, IMDB (I always have a tough time placing actors and this helps a bunch), TMZ.
My five year old is hooked on My Angry Birds (99 cents - she grew out of the Angry Birds Lite) ds, Cut the Rope (free).
How in the WORLD do I organize my apps? I would like to put all of the kids' games on one page. Also, how can I DELETE downloaded apps? We downloaded Racecar Maker & DS7 hates it. 

I will do this now.
Perhaps I should've read the instruction manual?
Nah, that's what the DIS is for 
I love that, I like it much better than a GPS that "recalculates" everything and practically screams "TUUUURN" right as you drive by the exit
I need to know two or three steps ahead to feel comfortable when I'm driving. So if I use this en route does it just give me a page of directions like the online one and I can screen shot it for reference? That would be fab-u-lous!!!