Hi Gary,
I guess the part that I thought would be the most relevant wasn't so much the end recipe (obviously not going to be a BIR one), but his insights on the tastes and characteristics he felt were essential to the tikka process as well as the effect of different approaches to the marinade (e.g. the differing effects with vs. without the yoghurt).
For example (and this is from memory), he was talking about the radiant heat producing a different charring on the chicken than the type you get from flames. He felt that the charring from direct flame contact was what imparted a bitter taste vs. a more pleasant taste from the radiant cooking of both the tandoor and his mock-tandoor with briquettes he details in the cooking process for his version. I thought this might be relevant in capturing the BIR Tikka taste, since they would use a tandoor with radiant heat vs. any of the grilling techniques we were likely to use at home.
To me, I find the way he thinks and explores the different effects of things to be where the real insights lie rather than the recipes. They're almost the by-product, but the "good stuff" is in the exposition before each of the recipes are presented.
Even some of the cooking processes he explored in making the risotto reminded me of some of the things I was asking on my "what difference does this make" thread that nobody seemed interested in...

In one case, he explored the effects of adding the correct amount of stock all at once vs. in stages and reducing it, or in adding it to the rice in a way that I don't remember. To me, this smacks of my earlier question of what does the ladle-by-ladle reduction of the curry base in your final curry preparation really do to the taste of the resulting curry.
He found that there was a difference in the effect for the risotto, so maybe it's really worth seeing what the difference is regarding the curry base so we can collectively say "this is a better way because..."
What I don't yet know is how much of what's in the book's exposition is actually present in the TV show. It seems more reflective vs. documentary, so maybe parts of it weren't on TV.
There were some other comments about the best time to add onions to the dish to reduce the chance that they would overpower or add bitterness, and that frying rice in oil briefly (as well as using rice at least 1 year old) helped to ensure it didn't puff up too much and turn mushy--qualities that would ruin a pillau rice as quickly as it would a risotto.
Maybe I'm just making connections that aren't really there; one of the main reasons I thought I'd bring it up to the masses. ;D
Thanks for the response,
ast