LOL, I see why are you so hyped - such a rare commodity as each episode is indeed valuable! :) I was already thinking about how they even do this, because some of them - Benetict C. in particular - have such a prominent and frequent presence in all entertainment formats (stage and movies alike). It must be indeed murder to match their schedules, but I imagine that they also make the effort because they like appearing in such a cult series (and possibly some serious money doesn't hurt as well! :D)