I'm a big fan of all the great movie devils, from Walter Huston to Ray Walston to Al Pacino to Jack Nicholson.
The devil is a cross between a really good used-car salesman and a game-show host, but with a lot more style and charm.There's a little Cary Grant thrown in there too.
I've always been a Dracula/vampire aficionado, being half-Romanian myself. Dracula has always been close to my heart - in fact, I have a first edition of Bram Stoker's book. I read it over and over again as a young kid.
A little bit of gratuitous violence in a well-thought-out story is fine.
With some hard work I'm sure you'll be able to walk again.