In 2010 it should be a no-brainer.
But I’m a bit disappointed with a couple of the options I’ve tried on my Mac linked to calendars.
• Google calendar → too few features
• Apple iCal → too few features and it’s very inflexible
Right now I’m logging specific minutes on each project using timeEdition, a free, desktop programme with a convenient widget.
That should be ALL I need. Yet when I go to print reports and use the invoice generator, there are glitches. And glitches within a hidden database cannot be debugged. (The user manual was last updated in 2006. That’s a problem, too.)
Therefore … from timeEdition I’m exporting to Excel. And reformatting to get a decent report for the client. If something goes wrong in Excel, at least I can fix it.
Leave a comment if there’s a better solution you use.
Rick McCharles 
Hey Rick, I track my time in Excel. A timesheet I set up with columns and spreadsheets. When I was at S.i. we looked at lots of different automated solutions for IT contractors and all our different clients (everyone does things differently). We programmed them but really, are they more effective than Excel spreadsheets?
Thanks Jessica. … That’s what I ended up doing.
The little stop watch helps though.