The NAZI dentist in Marathon Man.

The dentist from "my family" in the UK

Hands down--Sheldon S. Kornpett, D.D.S.

http://www.imdb.com/title/tt0079336/

Steve

The dentist from Little Shop of Horrors.

"You'll be a dentist, you have a talent for causing pain - Hey!"

Actually, one of my favourite, endearing actors was Edgar Buchanan (Uncle
Joe from Petticoat Junction).  Although he wasn't a dentist on that show, I
believe he played one in at least one previous role in a western.  He was,
however, a dentist in real life, a fact I learned on this newsgroup 6 years
ago:
www.imdb.com/name/nm0118000/
Just looking at him in that show makes me think of the stereotypical country
dentist, which is not quite as common nowadays.

Of course, who can forget the Mengele-based Nazi dentist in Marathon Man, as
Le Huart noted.  Lawrence Olivier was one of the greatest actors of all
time:  www.imdb.com/name/nm0118000/

As we all know, dentists are usually portrayed as loners, psychos,
murderers, etc.  Then there's the bufoon, like Matthew Perry in The Whole
Nine Yards:  www.imdb.com/title/tt0190138/  Did anyone buy the fact that he
was supposed to be a dentist?  Wait a minute, its Matthew Perry we're
talking about....don't think he's very convincing at anything.

J Suljak

J Suljak DDS

Easy. Steve Martin as the gas-sniffing psychopathic dentist in Little
House of Horrors
Video:
http://www.tv.com/uservideos/?action=video_player&id=dSM6lWar5bsFvTTd

We recently received a recommendation for George Hardy, who apparently
starred in the best worst movie ("Trolls 2") ever:

http://www.bestworstmovie.com/infection/news/story.cfm?cid=18

John Henry Holliday...particularly as portrayed by Val Kilmer in Tombstone.

T