Hitler is famous for being an incredibly good public speaker o.0
Personally i think tony blairs speachers were crap, "well, um, er, i think that, urm, that, er" etc etc... its just a few weres combined with long pause's, stuttering and umming and erring?

I belive castro was also a particualy good public speaker, i mean hes famous for his marithon speachers. Although i must admit ive never heard one. (i say was although i cant remember if thats a certanty)