My none jail break apps are.

Google earth(fantastic especially for free) everyone should have it.
Sky news
speed test(internet speed over wifi and network)
Thermometer, surprisingly it is pretty accurate.
Currency
Ipint
Angry birds
Doodle jump
paper toss
Virtuoso(keyboard thingy)
Traffic rush
Tap tap revenge
GTA china town wars.

Im jailbroken aswell so ive got Winterboard and one or two different mods to make the phone easier to use

I dont have a great deal yet, i tend to download and try and if i dont like it for whatever reason i delete it straight away.