[GuyWithNoLife]

I charge my phone at night, and the charge lasts long enough so if I forgot to plug it in the following night, it will still have between 20-30% in the morning. I probably average a few hours of talk time per day, and have my phone to check my email (IMAP) every 5 minutes. I'm currently running the leaked Sprint ROM, but I had the same results with the stock one.

One thing I always do is turn off automatic updating for the weather plugin on HTC Home... click to select the city, then use the menu button in the bottom right to pull up the options and turn off automatic updating. I don't use the plugin at all... after I disable updating I remove the tab with HHC (HTC Home Customerizer). I also disable time synchronization (from Settings > Phone > Services). I keep my backlight at max.

Hope this helps.