I got my Eris a week ago and this forum has been a wealth of information. I too had a battery issue, didn't last a full day after fully charging it. My favorite app is now the Advanced Task Killer. I believe it has tremendously extended the battery life to over 2 full days. That along with other advice from this board (turning off mobile, wifi, conditioning battery, etc) have helped make me a happy android owner.
Now I'm wondering, what other wonderful apps are out there? I am looking for those for the everyday user, not a business user, I've done some searches and browsed the market but there are so many out there, it's hard to choose and know what works better than others.
I've installed:
1) Advanced Task Killer - love it, saves battery and easy to use, put the widget on my home page so I don't forget to use it
2) Color Note - I rely on lists: grocery, to do, etc. Has been very useful
3) Astrid - Haven't used it much but has helped organized the few tasks that I've entered reminding me to complete them when necessary, detailed interface but also easy to use
4) Word Search - keeps my 7 year old occupied, a little difficult to draw a line when you find the word, but works well otherwise, other kid friendly game suggestions?
5) Worara Ringtone - free, able to find several songs I liked but not a ton
