App for tracking time spent on various tasks?
 

Is there an app for N900 that can track the time I spend doing various things? That is, something that could record, for example, how much exercise I've had, how much TV viewing, or for business-people, how much time is spent on different projects.

I'm visualising something that has multiple timers that can be named by the user, then individually started and stopped (paused) and reset.