Suppose you wanted to find examples of an excellent speaker using hand gestures. Where would you look? How about on YouTube. Don’t laugh! At least one member of the National Speakers Association has a series of his brief (five minute) videos posted there.
Alan Weiss is a well-known consultant. You can find twenty-one of his videos listed on his web site under "The Movies: The Writing on the Wall" at:
Ignore the showoff opening and closing with his fancy red convertible and white German Shepherd. Concentrate on the talk, and look at what he does with his hands.
Elsewhere on his web site he has a hilarious (and very shaggy) dog story about why the dog is white and can moan. See: http://www.contrarianconsulting.com/the-dog-star-the-case-of-the-moaning-shepherd/