The most productive app for me

- Skype (free) i can do free voip to my wife, friends, and doing teleconferences and video call as well.

- Facebook (free)

- Twitterfon (free) has a clear layout than others

- DivideLite (free) a good task manager ! Divide n conquer !!!

- Cooliris (free)

- VNC (free) to remote controlling my desktop from iphone

- ScreenSplitr (cydia free) i can stream the iphone screen to a mac.

- GPS MotionX (free) this app is cool for tracking your journey :)

- Yahoo! RSS feed, News, etc.

- BlogWriterLite (free)

- iSubha (paid) for dzikir

- iPray (free) it shows you the pray times

- Quran (paid) to learn Quran

- Dailyhadith (free) Hadith daily

- eSleepLite (free) it really helps you sleep LOL

- 9 toolbox (free) my girl's day

- SPL Meter (paid)

- Distance (free) to measure the distance you walk through