Clint Eastwood's ''Million Dollar Baby'' has scored seven Oscar nominations, including Best Picture and Best Director. Alejandro Amenabar's ''The Sea Inside'' has come away with two, including Best Foreign Language Film. What links both movies? The message that it's kind to help a paralyzed person die. To our knowledge, few critics have picked up on the films' shared ''right-to-die'' message. Had the plot been racial or homophobic killing, however, we'd be hearing an outcry (if the movie ever got made at all). Why the silence? We think it's because much of society believes it's the right thing to do, to...