Action:-
John McClane.
Comic Book:-
Catwoman(ok, not exactly a "hero"
Drama:-
Andy Dufresne.
Fantasy:-
Sinbad
Sci-fi:- tossup between
Han Solo and
Jean-Luc Picard
Comedy:-
Ace Ventura.
HK:-
Wong Fei-Hung
Horror:-
Ash
Anime (had to get that in there

):-
Motoko Kusanagi
[edit]actually that should be under "manga", which wouldn't count. In which case I shouldn't have to add my favourite anime hero to the list

[/edit]
Gangster Movie:-
Carlito Brigante. (again, not really a "hero"
Running out of categories here, but Andy would have to be my fave out of the list.