[WillPS]

Episode 163 another one where they've taken static shots of the end credits. I know we've assumed this is due to tape damage, though there never seems to be any damage elsewhere on the episodes, seems strange that only the credits get affected.

Possibly the episode content is being assembled from an omnibus copy?

Unusually for that one they let the credits run after the final newly created slide and it was indeed a bit distorted.