A new menubar app from Matt Gemmell that does one thing: creates a sticky Mountain Lion (or Growl) notification of your choosing. Far better than using the Stickies app (if anyone still uses it).
I doubt I will use it much, but I am sure that when things get really busy it would be a great tool to have to create extremely annoying reminders in the upper right corner of my screen.
One use case that I am sure it will come in handy for: that 30 minutes before you try to leave your house on a road trip when you are busy trying to get your kid packed up — yeah I can see using this so that I don’t forget to do a couple things before I run out the door.