Best role?
Sad to hear of his death, but there's no denying, he was a brilliant actor. Never really had many leading roles, but no matter how big or small the role, he more often than not put in a great performance. And sometimes he was the best thing in a crappy movie.
Favourite film role? I'd have to say it's between "In The Name Of The Father" or "Brassed Off". Although, his small but pivotal role of Kobayashi in "The Usual Suspects" was also quite good, and surprisingly, in the crapfest that was "Lost World: Jurassic Park", I also enjoyed his performance.
"Saddle up, let's get this moveable feast under way!"