Brooklyn-based playwright Cory Finley’s eerie domestic comedy The Feast is playing now through April 5th at The Flea Theater.  But though the play, receiving its world premiere in the TriBeCa venue, is new to the boards, Mr. Finley’s work is anything but. A member of Youngblood at Ensemble Studio Theatre and the early career writer’s group at Clubbed Thumb, his plays have been performed at …