i can't think of any, but i have often wondered why one-way glass isn't more common in zoos. melbourne has a silverback gorilla who hates being starred at and has to be kept in a separate enclosure with a bamboo screen. the rest of the melbourne troop have large areas of exhibit space where they can get well out of public view, but often are happy to sit near the glass viewing areas and sometimes the younger gorillas have a great time hitting the glass as they run past to get a reaction!
at taronga the gorillas don't have much space to get away from the public and i have observed behaviours there that i translate as frustration with the matter.
in the case of gorillas, i think provide them with their own spaces to retreat and the need for one way glass becomes somewhat defunct. however in exhibits where it is not possible, or for other species, one way glass could be a real advantage...