I chanced upon two very interesting blogs today. The SND Update Blog and Charles Apple. There are some pretty good interviews to be found on SND Update Blog. The ones from John Grimwade and Nigel Holmes were fantastic.
There's one quote from Nigel Holmes that I found to recreate the Dilbert moment:
You know when you do 6 or 8 graphics a week, some of them are not going to be very good. And those are the ones people would pick up and say,"Look at this rotten graphic!"