its been alarmingly common that former casts of old series and movies are being used by newer versions as supporting actors. like superman, cast from the 80's superman movies, luis and clark cast and other kryptonian related shows are visible all through out the Smallville
and now we hear lines... like this one with chuck's mother, frost... who is part of the terminator 1 and 2, usung the same line the terminator used
many movies and series do this, and if you spot one it really is a glorious. knowing that movie magic is one all visual, it also happen in character lines.