It's funny how slipping off the stool and buckling into the shelf wasn't enough on its own to trigger the Hulk Out, it needed some extra volts of electricity for David to say "Right that's it, I'm done".
Love the music that starts at 1:40, up to when he meets the taxidermist-stuffed bear that scared David a little when he was helping move it earlier in the episode. :)
*sigh* I know Ted Cassidy died after season 2, but they should have kept him as the voice of Hulk (I mean, like, use the growls they recorded). I mean, when he did the roars, he really sounded terrifying, like an animal. The later season Hulk grows was kinda bland.