“Class is in session,” a familiar voice purrs in the TV ad for Theresa Rebeck’s new comedy Seminar. In this case, the teacher is none other than Alan Rickman, so sparks are sure to fly. Broadway.com has your exclusive first look at the commercial, which also features starry students Jerry O’Connell, Lily Rabe, Hamish Linklater and Hettienne Park as aspiring writers who entrust “everything they ever wanted” into the hands of a celebrated novelist played by Rickman. Uh-oh! Click on for a preview, then get tickets to see Seminar at Broadway’s Golden Theatre, where previews begin on October 27.