All of them have been important for one reason or another. It is true that no matter what field you do a list of "the better...", there will always be disagreement. For example, the Guzzy 8 cyl was a piece of art but very unsuccesful in competition, so it was not a sensation for its performance but for its engineering. Does it deserve to be in the list better than the Ariel Square Four or the BMW R32?
Anyway, if it helps to widespread the "bike cult" then those TV programs are very welcome from my point of view!!!!
Raul