Aside from the pies being thrown towards the camera, I also recall there being a talking Muppet wall saying "surprise" at some point in the segment.
I find it surprising that "The Boy, The Girl, and the Jellybeans" is not uploaded yet, but I wonder if the official Sesame Street YouTube channel will someday upload these rare gems? I know they've been focusing on current and more recent content, but I am sure they have some room to add a few classic segments per week. At least they uploaded a clean copy of the "Family Food" sketch pretty recently - that is a real treat for sure. Hopefully this is a step in the right direction.
Another rare gem is a segment where Judy Collins and the cast are on City Island, singing "The Sunshines".