For ugly, a smiling Primo Carnera would give anyone a run for their money:

http://en.wikipedia.org/wiki/Primo_Carnera

http://upload.wikimedia.org/wikipedi...imoCarnera.jpg

Now I think we know where the writers of "Star Trek" got their ideas for the teeth of the "ferengi"

From the above article:

"For breakfast, Primo has a quart of orange juice, two quarts of milk, nineteen pieces of toast, fourteen eggs, a loaf of bread and half a pound of Virginia ham."