So the listing for the extra disc in the complete set is said to have the following:

"Humorous yet emotional look at every character who died on the series"

But i can't find this anywhere on my disc. Does anyone know of what happened?

the blueray complete series that disk is hidden in the cover of the box
Use the bluelight to see which way to turn the FDW and open the secret compartment.
(shine the light on the Island)

I didn't find that feature

I found the disc; I couldn't find the video

I'm pretty sure that this feature didn't make it onto the DVD/Blu-Ray at all. They announced it and dropped it for some reason.

I'm guessing it's the video from Comicon last year and they probably coudln;t secure the Boyz 2 Men song to make the DVD feature worthwhile. It WAS a cool video... bummer.