If you know what is cron, think of Gueic as a graphical (Gtk+) cron. If you don't, think of it as a (still not very) powerful Gnome alarm clock, in which you can set a list of events, each one with: a name, a scheme that describes when it happens (one time? hourly? daily?) and an action that describes what is done (it can be "nothing", or "run this command", or "play music", and more).

Package for maverick: https://launchpad.net/~toobaz/+archive/toobaz