Downloads: gCalCron Automates Your Linux System with Google Calendar
http://lifehacker.com/5179566/gcalcron-automates-your-linux-system-with-google-calendar

gcalcron allows you to issue terminal commands to a computer through Google Calendar.

run terminal commands in ubuntu using cron and scheduled by google calendar

Nice is a tad insecure (well as secure as your google account!)

For those out there who use Google and Facebook to manage events and calendaring, here’s another how-to that might not only make your busy lives a little less complicated, but will relieve you of the pain of having to keep up between multiple calendars.

facebook tech tip

Windows/Mac/Linux (All platforms): Google Desktop's gadgets are looking more helpful these days, with the addition of an official Google Calendar gadget that puts your appointments at your fingertips.