Val Kilmer wants to make his Mark (Twain)
Few actors own a role the way Hal Holbrook owns Mark Twain. The Tony- and Emmy-winning actor, who recently turned 87, has played the humorist in his one-man stage play "Mark Twain Tonight!" since 1954, logging thousands of performances and many more miles traveling with the show. But longevity doesn't necessarily guarantee that you have an exclusive monopoly on a part. A relative newbie to the Twain game, Val Kilmer …