A while back, Matt Gemmell wrote a great little $3 utility called Sticky Notifications that merged Mountain Lion's notification center with sticky notes. It allows you to pin reminders to your desktop.
Now, Jeremy Tregunna has released a time-triggered twist on the idea. His Scheduled Notifications utility lets you specify when you want to be pinged.
"I was using sticky notifications to remind myself to do a couple things at a time," he writes, "These were things which i didn't need to do now, but in 10 or 30 minutes. They were eating up space on my screen and covering my inspector panels in Xcode."
He wanted to be able to fire them up, but have them trigger at a specified time. So he got to work a