The Man with Monkey Hands (Season 3 episode)

Summary
The Man with the Yellow Hat has an allergic reaction to Poison Ivy while testing Professor Wiseman's new invention, making his hands unusable for 3 weeks! During that time, George attaches various utensils to the man's hands to help him do things until they heal. When the man discovers that he has to do a video conference rather than simply a conference call with important scientists who wish to patent Professor Wiseman's new invention, George uses his hands to demonstrate the invention.