Seat Filler

 How to Succeed in Business Without Really Trying
A decent singer, Harry Potter star and Trevor Project spokesman Daniel Radcliffe is disarmingly charming — and dances his cute little butt off — as corporate ladder-climber J. Pierrepont Finch in Rob Ashford’s crowd-pleasing revival. Christopher J. Hanke erases Charles Nelson Reilly’s effeminacy from rival Bud Frump, Broadway Bares fave Charlie Williams steams up the chorus, and Anderson Cooper’s voice makes for a suave narrator.
Al Hirschfeld Theatre, open-ended. 

 Kin
In lesbian playwright Bathsheba Doran’s lovely and novel new play, we see, primarily through their separate interactions with friends and extended family, the ups and downs of a struggling odd couple: Kristen Bush as Anna, a Texan poetry scholar, and Patch Darragh — the gayest Tom ever in Roundabout’s recent Glass Menagerie — as Sean, an Irish personal trainer. “It’s awful, isn’t it?,” says Anna. “Getting to know someone.”
Playwrights Horizons, through April 17.