well, battery report on mine is pretty damn impressively good!
unplugged at 11:30am, i reach my workplace at 12pm and from thereon, wifi is turned on with MSN Talk Pro, Skype, GoChat, WhatsApp, Gtalk all running in the background. During work i browse facebook, engadget etc etc etc with my phone for around 30mins total i think today and chatting on msn/gochat(facebook chatting app) for quite some time.
At the end of my work at 10pm, my battery still left 35% and then i left for jogging with 30% battery left with GPS and CardioTrainer turned on with music playing through my headphones. 1hr later when i arrived home i see my battery level at 24% and then after a quick shower, started watching TV and wifi turned on and chatting on Skype while watching tv for around 30mins then as of now, my battery is at exactly 10%

running jboogie's deblur honey and oc settings at 1000-56, 600-35, 300-18
so yeah, mine's considered quite hardcore use and the battery still managed to last me a full day

and forgot to mention occasional angry birds at work too