Just found  videos of the Fetch with Ruff Ruffman season I worked on Youtube.  I worked on season 4 field production, studio, props, and finale set dressing.

In this video the last two contestants are facing off.  Their final face-off challenge is the electromagnetic spectrum stacking challenge.  I love seen games/props that I made translated into the cartoon portion of the show.  I was also in charge of cheesing up Studio G.  Too. Much. Fun.

UPDATE:  Looks like the video was pulled when episodes where made available to purchase on demand.  You can now get purchase the episode or season pass: