Anything to avoid being a talking head

Some "speakers" are known for usual gimmicks.

They won't do a talk without a YouTube clip of the bible reading.
They will always open or close everything they do with a song. Or three.
Every children's talk they give will be the reading of a children's story, projecting the pictures.
Whenever they are leading something will include give people food or a trinket to take home.

Now all of the above can be good. 
I've done them all.
More than once.

And if the communication method employed is used to help get their point across... then swell... knock yourself out.

But I wonder if there's another motivation which leaders are tempted by. Even if it is utterly predictable, they will do anything to avoid being a talking head (because that would be so 1992 and never hold anyone's attention...).