Lucky Damon. “Happy Endings” became a certifiable success this fall. But even luck, luck, luckier Lamorne Morris, who stepped in as the third male roommate sharing quarters with adorable nerd Zooey Deschanel. Because “New Girl” is the biggest breakout comedy of the season and it only gets better week to week. Anyway, Morris, whose previous credits include a run with the Upright Citizens Brigade, has a good story to tell. At least I hope he does.