Well my 32 hours wasn't heavy usage, but I would say moderate usage. First tested all the features to make sure they worked. Tested 3g speedtest and also wifi connectivity/speedtest. Downloaded and installed a bunch of applications through 3g. Posted some app reviews. Kept the screen brightness at medium. Used the browser and visited a few web pages. Watched a few youtube vids. Took a bunch of pictures with the camera. Tried out the video recording to test quality. Posted and checked facebook a few times. Chatted on gtalk. Listened to all the ringtones and chose one. Used google maps to make sure it worked in finding the nearest target, joined latitude, used google navigation. Checked out a few restaurants in yelp and where. Messed around with all the wallpapers. Visited my gmail account, reading and composing some emails. Made a bunch of phone calls, using the speaker phone a few times. Used the phone to text a lot. And probably a few other things I forgot to mention.
But ya, 32 hours with I guess the things listed above.
edit: o ya, ssh'd into my linux box and did some admin stuff. And tested out swiftp on the phone.