Found this clip over at Animation ID--a blog worth frequent visiting if you haven't been there already. (Link in right column under "Watch more") This clip was an example of Ken Harris' animation at Warner Bros. I think Bugs looks the best here ("Frigid Hare") of any cartoon I can remember, and I love the subtle acting that is rarely seen in the old Warner cartoons that usually relied heavily on the gags. Bugs' legs in the wide shot swim crazily, but I think the medium shot is gold. Clear poses, and a great little heartfelt moment that gives Bugs an unusual moment of compassion. I just think the poses are so expressive and natural, and the drawings have so much appeal here.
You can see Thad's post and comments on this and another clip via my little Google Reader widget on the right ("Ken Harris--Frigid Hare").