Kanchho bhai, thanks for creating the thread for Android Apps and thanks all for sharing your experiences here.

Here's the list of apps that I have been using:-

1. TuneInRadio (Radio streaming)
2. Opera Mini (Browser)
3. Gem Miner (Game)
4. Angry Birds (Game)
5. Baghchal (Game)
6. Nepalnews (news from Nepal)
7.  Skype
8. Advance Task Killer (it's not helping me save the battery though)
9. Barcode Scanner
10. JEFIT (fitness related)
and few more...

BTW, I own G2 and  I have to charge my phone everyday even if I use it to a moderate amount the battery goes down to 30-40% at the end of the day. I have installed Advance Task Killer, but I notice some of the apps still be on the task even if I don't use them at all like Wifi Calling, Yahoo Messenger, Amazon MP3, photobucket etc. Any suggestion to get rid of those apps. from running in background? Thanks.