Was Robin Williams the corpse in the movie 'Bernie'

There is a movie on netflix I have seen, in the first scenes Jack Black is a mortician working on a corpse who looks like Robin Williams. Does anyone know if that is an uncredited cameo?

Nope, I should’ve checked first.

One of Jack Black’s best vehicles and you just have to squirrelcrap all over the windshield. How dare you!

The corpse looked like Kevin Costner to me. :wink:

Interesting movie, that.