My vote goes to marinakatomb. That rabbit makes me laugh every time. And it never seems to run out of carrot.
Plus I learned a trick while watching it. If you highlight text, wait a little while, then click and drag somewhere in the middle of it, all gif's will stop moving until you release the mouse button. If you time it just right, you can watch the bits of carrot spraying from the rabbit's mouth after taking a bite. It just makes my day 🙂