Rival Networks’ Boycott Jay Leno

ABC and CBS are discouraging their stars from appearing on the new prime-time talk show to keep it from undercutting their costly dramas. Meanwhile NBC says it’s not concerned.

The boycott highlights an unintended consequence of NBC’s decision to move the veteran late-night comedian into prime time: making it harder to book some TV stars whose appearances could boostJay  Leno’s ratings.