I really like the Dredd film.
Karl Urban is a perfect Judge Dredd and I really liked the self-contained story. Mega-City One is such a diverse and sprawling entity that you could spend millions trying to capture it and still fail miserably. This makes more sense to keep the Street Judges in one block rather than letting the story spiral too far afield.
Judge Anderson is also a great character and I think it was a great dynamic.