Have you not noticed... The cabin is the same in almost every one thy do. Apart from obviously much smaller planes... I have seen nearly all of them, and you do notice after a while... the same Airbus dark brown/black ventilation grills just above the overhead lockers, the Airbus locker doors etc... They just build a wall along one aisle to make it a narrow body, hence making a 737 a rather attractive 2-3 seating!

I do like them though... good informative programs... My mum does not like that I watch them, given that I fly for a living... I tell her that it is so I am fully prepared for any eventuality!