Well, if you are concerned about how YOUR stuff looks, and the fact that you might be rusty, you could always look around for someone else to do the tactual brewing. You know, like get help with it? There is likely someone nearby that brews who would welcome the chance to bring the obsession out into the public more.
That way you would have control over the content, while enlisting in the aid of someone who has nicer-looking equipment and current techniques (although We all know that nice-looking equip. doesn't mean much, and as far as technique, well, there are plenty of those out there!)
How long is this segment? You may have to trim out some things in order to fit the whole process. I think it would behoove you to think about what you would want to show and see how it would pan out for time. Choose the most important aspects, and mention some others, and offer places (like this site) where people can learn more.
For instance, you might not be able to show Batch Sparging AND Fly Sparging, but maybe choose one and mention there are similar but different ways to do this step, and people can learn more when they go to try and make their own.
Mention that lots of larger areas have one or more brewing supply stores, and that the Internet now makes it feasible for anyone to order quality ingredients of their choice without having to drive miles and miles.
Personally, I would be interested in the science behind the conversion, fermentation, etc. too.
I def. think you should do it! I'd gladly watch that if I had a local cable channel! (Dish Network...) Not sure if you could do this on a local access channel or not, but you might be able to get an LHBS to loan some equipment for the show, and do a bit of advertising (like thanking them for for the generous use of their stuff on air).
It would be fun and then again, maybe not completely fun, but yeah, probably pretty fun to do.