Merlin Mann has made a list of Best iCal Tips over at 43 Folders, his site about personal productivity. The site is great for blog postings about staying productive and "getting things done" (GTD), and he recommends using iCal as a great way of doing this.

The list of tips includes ways of getting the most out of iCal, organising multiple calendars and scheduling a "dash," a way to prevent procrastination.