Hi All
We all know how important the 3ds Max/Design 'Utah' Teapot is. In fact, it's so important that Amsterdam Schipol Airport has added one to their departure area. (OK, so this may not be the reason they've added a giant teapot in the restaurant, but if your interested in why we have a 'Teapot' in 3ds Max then read on....)
The Utah Teapot, or NewellTeapot, was originally created by a British Scientist in the mid-1970's. This teapot is now a benchmark for rendering and computer graphics. But why is it so important and why do we have it as a "Primitive"?
Martin Newell (hence Newell Teapot) is a CG specialist programmer. Who I believe now still lives in the US with links to Adobe. The teapot was developed whilst working at Utah's University (hence Utah Teapot - do you see a trend in computer graphics here?) to act as a way to easily test his programming experiments. After all he's, British so what else would he choose to use! This Teapot has now come to symbolise all things 'rendering' related, which is why we set it in parts of 3ds Max's menu icons, as below.
The teapot remains a great object for rendering testing and benchmarking. This is attributed to its shape that allows for self shadowing (for example from the handle/spout), and curved edges for testing of reflections. I will always add a teapot to most of my scenes to allow me to rapidly check if the various render settings I've chosen are efficient, the camera matching is accurate, and the materials are believeable. By using the Teapot you can quickly identify if the object is not behaving as expected, due to its easily recogniseable form. The Teapot, although 'primitive' carrys many complex forms and as such lends itself to testing extremely well, whilst being efficient from a test-rendering point of view.
I've heard from various sources that the original real-world teapot object it referenced is approx 1/3 taller. This interesting link on Wikipedia (and if it's on Wikipedia, then it must be true) adds to this argument by giving a reason for the scaling 'error.'
"The real teapot is noticeably taller than the computer model because Newell's frame buffer used non-square pixels. Rather than distorting the image, Newell's colleague Jim Blinn reportedly scaled the geometry to cancel out the stretching"
Below you will find an image that is referenced as the original Utah Teapot Image:

Above Image from this site.
The Utah Teapot, although simple, still makes me smile when using 'Max.' I hope this short posting has convinced you of it's merits when performing test renders, and how, even though its over 30 years old, still has a space in todays complex rendering pipelines. (Below is a 3d-printed teapot which sits on my desk.)
Flickr Link here
Have you seen a Utah Teapot elsewhere? Then why not share the image with us all.
Happy Max'ing