Besides being the point of origin for all modern American literature (according to Ernest Hemingway), Mark Twain was one of the few examples of celebrity before such a concept existed. Fantastic in turning a clever phrase and quotation, audiences clung to his editorial opinion, commentary and point of view. Keeping his spirit rightly intact is Hal Holbrook's “Mark Twain Tonight!” A one-man play Holbrook created in 1954, the production has been nurtured by the actor on Broadway and television, earning him Tony and Emmy awards for their respective incarnations. More than a simple visual recreation, with the author's great handlebar mustache, signature white suit and ornery cigar smoking, Holbrook's performance is a vessel for the humorist's timeless social satire, razor-sharp wit and poignant anecdotes. Opening CenterStage's Broadway season, “Mark Twain Tonight!” is scheduled for Oct. 2 at 8 p.m. $43-$58.