You’ll probably love the “HOURS” app for the iPhone. I used to use a paper time tracker but this app actually works great. I use it for keeping track of where my own time went throughout the day. Here’s a screenshot of the app at work.
As you can see I am currently “wasting time online.” I’m going to get back to work and then I’ll just click the timer for whatever I’m doing and at the end of the day or week I can email a report to myself, or look at just certain categories or projects etc… It’s very cool for productivity geeks like me.