Ultimate Alarm Clock for Mac

From MotaSoft Software:

The Ultimate Alarm Clock (UAC for short) is an answer to those who don't like to have to leave an alarm running in order to be reminded. It is designed to save screen space, and be as annoying as possible. It's features include:

• Runs entirely in the background, minimizing memory usage and screen real estate.
• Once set, always set. Doesn't need to be relaunched manually every time you login.
• Can launch any file on your computer.
• Includes an egg-timer/chronometer
• Plays MP3s in a loop, so you're sure to hear them eventually.
• Customize which days of the week an alarm will trigger on.
• Plays folders, or collections of MP3s/MPGs.
• Plays Apple-Scripts natively.
• Can play a random song via iTunes (iTunes 2.1 or later required).
• Preferences allow you to push your speaker to the limit, or warn you when you miss a rarely-occuring alarm (someone's birthday, for instance).
• Use a password to protect your alarms from premature dismissal.
• Two priorities available for any alarm, which make an alarm even more eye-catching.
• Customizable snooze timer.
• Behavior control over MP3/M4A/MPG playback.
• Uses the Services system to create alarms from selected text in any running application.
• Bandwidth-friendly; even at a 14.4k connection, should download in less than 10 minutes.
• Pre-Jaguar version available on my website.