Mine is a fairly old (nine-ten years) Timex "Nature Sounds" clock radio/alarm clock. One of the available alarm sounds is a chime that sounds like a church bell, rings in a seemingly random pattern, and gets progressively louder. The only alarm that I haven't been able to ingore. Unfortunately, there's that big, fat "snooze" button right on top, as well... Anyways, they make an updated version of it, so I'd recommend checking that out.