Even worse - an utter show off who should know better. I too have nearly 10 000 hours and around 4000 instructional, on things from Chipmunk to Vulcan to Phantom to VC10, but now I instruct on the PA28 as my main flying activity I teach people to fly it the way it is safe to fly it.
BEagle, well said.
Too many instructors don't seem to realise the effect this sort of thing may have on students. This is another aspect of what I've just posted on the instructional techniques thread (can't remember what it's called). Instructors are teaching people, not teaching flying. To explain, they are teaching individuals to fly, rather than demonstrating flying techniques, with little regard for the person sat next to them. At least, they should be!