Webmasterworld has an interesting thread called "Hit by a Bus" where people are chatting about steps to take now if you were hit by a bus tomorrow. I’ve got to say that I’ve got the advantage in that for my business, I’ve got a COO who just loves paperwork and finding everything about everything and making records of all of it….so I know that the business wouldn’t have too many questions about logins and such if I were hit by a bus….but if you haven’t thought of this, and what others will be left with trying to figure out, you should.
In the mean time, live long and prosper.