NBC says it has a deal with Conan O'Brien to produce a possible series, only days after his rancorous exit as host of the network's “Tonight Show.” NBC is picking up a pilot from O'Brien's production company, Conaco. The drama, as yet untitled, focuses on a Supreme Court justice who leaves the bench to start his own practice. Casting has yet to be announced for the pilot, which is bucking for a series slot on NBC's fall schedule. Despite O'Brien's recent split from NBC as an on-camera star, he retains a development deal with the network. Past series produced by Conaco include the comedy “Andy Barker, P.I.,” which featured O'Brien's longtime talk-show sidekick Andy Richter.