0 used to say that someone is very good at the activity mentioned. Extraordinaire is French for "extraordinary":
Richard Twitcher, philosopher, controversialist, and drinker extraordinaire
In my view, it has served as a knowledge-pretense extraordinaire.
An "enfant terrible extraordinaire", he did not graduate from high school and rumor has it he dropped out or was expelled in 8th grade.
He is also a womanizer extraordinaire and is always in a jolly, trickster-like manner.
Not only is he a bully, but he's also a tattletale extraordinaire.
As an emcee, he is more than a surly provocative ring master, he is an experimenter extraordinaire trying to generate enough spark to get the incubation process accelerating.
Dennison excelled in the classroom, and as a champion debater; he also was a fine tenor in the choir and cornetist "extraordinaire" in the band.