ad nauseam - ODD-NAH-zee-AHM - a reference to something that has been repeated so often it has become tiresome

Example: "With the Tiger Woods news fading, the press now tackles endless details on the "underwear bomber" ad nauseam; it was only a matter of time before even the comics picked it up, with Jay Leno's description of the Nigerian as wearing "Fruit of the Lunatic" and Stephen Colbert calling the event the "crapification of the pants-scape."