Do you know the problem that even more than one alarm clock don't get you up in the morning because you just switch them off one after another? Then you should try this one:
The Flying Alarm Clock has a propeller, which flies into the air when the alarm sounds. You can then only switch it off again if you find the propeller and put it back on the clock. By then you are sure to be awake :)
The clock needs 4 AA batteries, which you can order
here.