The female cast members of friends voices have been getting progressivly 'deeper' for the last two series? ESPECIALLY in this one, for example, when pheobe was dating that guy (wont say much so i dont have to put a spoiler space) and ross was dating someone aswell FOR pheobe... pheobes' voice was deep, Rachels was deep, monicas seemed long, and drawn out... maybe my hearing's going if it isnt actually happening!
Dave