Llewellyn King, exec producer and host of White House Chronicle on PBS, is fuming over President Barack Obama’s choice of reporters to call on at his recent press conference. “Excuse me, but I am a potted plant,” King writes. “Well, at best an extra, who has been sent over by Central Casting to fill in the numbers.” The problem: Most reporters, King included, “wave our arms in the hope we might be recognized towards the end of a long, rambling session that seems more like the press secretary chatting with his pals who have seats assigned in the front.” His show airs on some 20 stations nationwide.