Mindful displays your day's iCal events right on your desktop, underneath your icons. Your calendar will no longer by hidden away where you never see it, but laid out right where you're already looking.
Mindful's customizable interface allows you to tailor it perfectly to your working environment. You can set its transparency, which iCal calendars it shows, how much of the day you see, and more. All the while, it doesn't take up room in your dock.