I think the writer's strike makes this a real possibility. Most major shows only have one to two more weeks of material to air prior to the networks having to go into reruns. Putting something fresh on the air that would gain "big" ratings is something that networks will be be scrambling to do. Considering that even game shows have teams of writers these days something like live sporting events are going to be considered a top option.
Not exactly MMA related but I suppose with the "when fresh episodes run out" catch I have enough reason to link it.
IGN did a piece covering the status of major shows and networks through the strike.
Update [2007-11-9 11:46:39 by Brent Brookhouse]:I didn't check the diaries before I posted, but just to give credit where credit is due Michael Rome posted about this yesterday.