Yesterday my iPhone was used more than usual; in fact, I got the battery all the way down to 10%. I have my iPhone set to push email from MobileMe and MobileMe gathers email from work and my Gmail account. My computer at home pulls my my wife's calendar and adds it to iCal, which is then pushed to my iPhone. I have been using Evernote to collect ideas for gifts and lists. Yesterday's list was the grocery list. While at the store I used my Jawbone Bluetooth headset to call mom and my wife to ask a few questions about their respective lists. (I needed to get out of the house so I volunteered to do the shopping.) When everyone was in bed I checked over my finances via Safari and the played Spore and Diner Dash until I couldn't hold my eyes open. I set my two alarms to get me up in the morning and went to bed.
Recently, I found several podcasts of interest to me and set my computer to download the whole sets (about 600 podcasts) while I slept. In the morning I synced my iPhone and received the 5 oldest podcasts in each series so I could start watching them from the beginning.