Some iphone apps I find that are very useful are :
PushMail (If you do not have a exchange server)
RDP
iRdesktop
ping
iSSH
Air Sharing
Some games that I enjoy :
Lux Touch
Pocket God
I Dig It
Price is Right
Topple
Star Defense
Field Runners
Bejeweled 2
Tetris
Monopoly
GeoDefence/Swarm
Flight Control
Sim Cty
I’ve got a lot more, but those are the games I play the most, and the apps that I use.