Jerry O’Connell will make his Broadway debut in “Seminar,” the new play by Theresa Rebeck toplined by Alan Rickman.O’Connell will play one of a group of wannabe novelists who sign on for a seminar with a lit giant, played by Rickman. Lily Rabe, Hamish Linklater and the newly added Hettienne Park (“The Intelligent Homosexual’s Guide to Capitalism and Socialism With a Key to the Scriptures”) also have booked roles as aspiring scribes in the class. O’Connell (“Jerry Maguire,” “Crossing Jordan”) recently toplined CBS skein “The Defenders,” which wasn’t picked up for a second season. Sam Gold helms “Seminar.” Main Stem production reps the world preem of the comedy by Rebeck, who’s also at work on the upcoming NBC skein “Smash.” Jeffrey Finn, Jill Furman, John N. Hart Jr., Patrick Milling Smith and Roy Furman make up the producing team. “Seminar” begins previews Oct. 27 ahead of a Nov. 20 opening at the Golden Theater.