Triple threat Mr. Show Biz, Mark Nadler, brings back his ever popular Hootenanny (the one you remember from Sardi’s) with guests galore at The Friar’s Club on East 55th Street in a two-hour extravaganza (including cocktails and passed hors d’oeuvres) Thurs. November 4 beginning at 7 pm. And you can see Mark monthly for this one-of-a-kind experience.