Will Arnett, Bradley Cooper team for dramedy “Is This Thing On?”

Will Arnett, Bradley Cooper team for dramedy “Is This Thing On?”

Longtime friends, Will Arnett and Bradley Cooper co-wrote and co-star in Friday’s “Is This Thing On?” a divorce reconciliation comedy-drama that Cooper also directed. Arnett and Laura Dern are Alex and Tess Novak, who’ve divorced but continue to see each other to raise their two sons and mingle in the same social circle. On impulse, Alex, who has moved into the city and a bachelor apartment, tries standup at an open mic night. It changes his lif…