How did Smiegel re-do Rudolph...Reindeer?

I saw a repeat SNL a while back on Comedy Central and they showed one of those “Cartoon TV Funhouse” segments by (Eric?) Smeigel which was a brilliant parody of the old Rudolph stop-motion tv show that’s shown every damn xmas.
What was so cool was not only did it look EXACTLY like the original, but the voices sounded exactly the same!
How the hell did he do that?
I mean the snowman sounded exactly like Burl Ives!
It’s freakin’ me out still.

You sure that wasn’t the Pulp Fiction/Rudolph thing on Mad TV?

Sounds like the Rudolph parody SNL did a few weeks after 9/11, which satirized the celebrity attenionhogging at Ground Zero.