Getting awake isn't a problem for me, the alarm does that quite well. But how do I get motivated to get out of bed? Well, I just remember I'm awesome. And then I get up, start boxing the air with a few punches to shake off a bit of lethargy, then get dressed.
Once, I even walked out the side door, turned on a hose, and blasted my head with cold (as in just about freezing) water to get rid of my bedhead. Originally it was to wake me up further, but the cold air did that much quicker than anticipated, so really it was just about the hair by the time I turned on the hose.
I might do that again. It was fun.