Sleeping pills.
Putting your alarm behind stuff doesn't work. If you're still that tired, you'll probably end up falling asleep again. Sleepy me is as clever as me, and also a dick. He can find the sleep button even though he can't use his eyes. I've got a loud and obnoxious alarm, but you get used to that (My alarm is various songs blasted full volume through 5.1 surround sound. Chop Suey and Violent Pornography can't wake you up? You've got a serious problem). Sheer willpower is the stupidest solution. People who suggest that aren't having the same problem-if you can overcome the need to sleep, then of course you don't need a better solution. This is about people who can't.
So I figured the problem is the quality of sleep, so I started taking a sleeping pill the night before, ensuring I end up asleep to give me a good rest, and then I hope my alarm gets me up. It's not foolproof, but setting up a good routine where you get good sleep is helpful. I can sleep for 14 hours at a time easily, and I'm a heavy sleeper, but it gives me a fighting chance of being able to wake up.
Also, working out (Not right before bed, that keeps you up), helps you get better rest. Go for a run of an evening or something, it makes it much easier to go to sleep, and you wake up feeling better (Unless you get cramps).