I found it on Youtube:
Thanks for posting the link because it saved me from having to track it down to watch it. But I did still look it up just to say that it's on Disc 99 of the "coffin" set, which is comparable to Disc 3 of Collection 19...
It's too bad that seems to be his only interview (especially when many of the other actors have multiple interviews on the DVDs). I would have loved to have heard his take on the Gabriels...