Chase absolutely loves to brush his teeth. (And by 'brush his teeth', I mean hold the tooth brush in his mouth and suck the flouride-free toothpaste off it). When we say, "Go get your toothbrush", he'll run off to his bathroom, pull open the drawer, stand on his tip toes (he's not tall enough to see in the drawer, but that doesn't seem to get in the way of him grabbing what he needs) and reach in to get his tooth brush and toothpaste.
Now I just need to work on helping him wait until he's done with breakfast before starting to brush his teeth. That and I think it's probably dangerous for him to walk around with the toothbrush in his mouth.