Well, having gone through this not too long ago I thought it might be useful for people here to know kind of how the show is made.
A couple months before the taping, shortly after agreeing to do the show, the guest to be gets some emails requesting information. It's not exactly a resume request but basically it's people they should talk to, background information, an outline of interesting events that happened to you, stuff like that.
During the next couple of months, they meet with people you suggested to get some background, and they have a couple of meetings with you to talk about those same things. That's a good time to collect pictures or other keepsakes that might be interesting to highlight on the show.
In the week before the taping you have a final walkthrough where they show you the studio, where you will arrive, who the people working with you will be and so forth. All the logistics.
Then there's the taping. It's about 90 minutes of taped show. The host (Keith) never tells you exactly what he intends to ask but you sort of know what the questions are likely to be because you gave them all sorts of seed information. You don't know which people they talked to ended up giving the best interviews. Basically he could ask anything about your life that he thinks is interesting. The only thing you know for sure is he's gonna go mostly chronologically.
After the interview there's Q&A with the audience, and then you're pretty much done.
The show folks edit the 90 minutes down to an hour, so they save your best stuff and probably the best question or two. The rest ends up on the cutting room floor. Which is probably good because probably invariably the guest ends up thinking one of his/her answers was lame and it's just as well that the world doesn't have to suffer through it.
After the show airs, they show it formally here in house a couple of times and you do live Q&A.
A few months after that, it's someone else's turn and you're officially a Behind The Code has-been like me 
So, the interview itself is pretty candid, but the environment is very professional. They had a makeup person for me and so forth and I'm sure my skin has never looked so perfect since and may never again. A very professional looking person used a light meter in my presence, and there were two high quality cameras running at all times.
In contrast, Charles has interviewed me a couple of times and it's much more informal, you get whatever happened that day pretty much however it came out, editing is very light, and we do the best we can in the environment that we have. Channel 9 is great for that real life feeling. Makeup and lighting persons are nowhere to be seen -- unless Charles uses one
So, it's not like there's a script for Behind the Code but there is considerable planning.
Does that help?