Certainly for my father, there were great times, good times, not-so-good times. He might be shooting a Fellini film for six months, then not working for two months. I'm used to that dynamic.
Of course we are doing this primarily for ourselves, but I know our fans dig most of it, too.
I think a lot of the instincts you have doing comedy are really the same for doing drama, in that it's essentially about listening. The way I approach comedy, is you have to commit to everything as if it's a dramatic role, meaning you play it straight.