i can't think of an older English language actress known for their voice that isn't either the type of person who gets oscar noms (And is therefore out-of the price range) or a voice actor who does silly voices or voices children. I mean I guess there's Shohreh Aghdashloo.
Then again I suppose people didn't really know Nimoy for his distinctive voice.
Check it: Saving Ryan's Privates and its an anti circumcision film