Puckish: I feel the same way you do... which is why I started making interviews about 1 month apart and then spreaded them out a little more. Of course, now that I don't have to do so much work on them, it's easier, but I also think that if the subject isn't well known, there simply won't be so many people asking questions... or at least those funny and witty questions that make the interview more enjoyable.
However, I think a very large interval between interviews will also have a negative effect - people will start forgeting to come to this board to be informed about new interviews and won't post any questions... which is not good either.
So I'm trying to find some compromise somewhere in between...