At our house, a little while back (yeah, I'm behind in my blogging):

Tamara: It's so hard to change him. He'll fall off if I don't hold him the whole time. All he wants to do is stare over the edge of the change table.

Matt (babytalk to Wil): Aw, are you a little adrenaline junkie?

Wil (grinning): Heh heh heh.

*sigh*

He likes to try the stairs headfirst as well. And now he's able to get there on his own.