This checklist didn't blow me away, but my favorites are the Alien, Statue of Liberty, Robot, and Leprechaun.
I actually came across Lego's Minifigure Bio site. According to that, I ended up with Sleepyhead:
'“Just five more minutes…”
Ya-a-a-awn! Is it really time to get up already? The Sleepyhead isn’t quite ready to face the morning yet. He was just having a totally awesome dream about adventuring in a magical world full of colorful knights with swords that shoot lightning…or was it the one about the time machine powered by historical hats?
Who can rise and shine when bed is so comfy and you’ve got your favorite teddy bear by your side? Don’t worry; the Sleepyhead will be up in a minute. Maybe he’ll just close his eyes and grab a quick nap first, though. After all, you can’t get through the day without plenty of rest! Zzzzz…'
I love that the bear looks just like Rupert: