I got tons of apps and games. I am addicted to my iPhone. I wish I could have more than 11 pages on the iPhone. I hate combining them. But I should.
If you like social games there is a few good ones. Words with friends, draw something. Zynga makes both and they have alot more.
Also there is a bunch of board games. EA makes monopoly , life, risk, battleship etc
Also angry birds is an obvious choice. Hehe
Good apps I love are live cam. You see public cameras all over the world. Some beautiful scenery from other countries.
Other great apps you could get is a QR reader for those squares you scan for stuff.
Social media apps like Facebook and twitter are obvious. Star map is a good one.
Batter doctor for charging.
Nook,
amazon, photobucket,
Opera. Yahoo axis for web browsing
Also your local tv stations might have their apps.
If you have a reefkeeper there is a app to check your tank stats like some ppl have in their sigs on other sites. I have it on nanoreef. The app is called ireef
Music. I use ootunes to stream radio stations. Pandora, I heart radio and lastfm are great apps
If you have an iPhone 4 or 4s should use this trick to close apps not in use. If you don't they will reside and use up battery.
Double click your button and on the bottom there will be the apps you recently used. Press and hold your finger on them till they shake and have a red circle with a minus in it. Click the red circle to close them. It won't delete the app. Just closes it. Plus is good to use the dbl click to switch between apps on different pages.