Why was Sam Waterston the only celeb on "Celebrity Jeopardy" today?

TV Arts

rst
They usually have three celebs playing, correct?
                                            
Anlatt
I know Sam Waterston is an actor, but is he a CELEBRITY?

Now, maybe if you had said Fred Thompson....
                                            
EvWill
One actor from each of the L&O's, you take what you can get.

Everett W.
                                            
rst
OK so does anyone have a real answer to my question?
                                            
FDR
the answer is 7
                                            
NewportsRetrowebtvnet
Be happy-- no Paris Hilton or other faux celebrities. 

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http://www.theanimalrescuesite.com
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jack
http://www.answers.com/main/ntquery?s=celebrity&gwp=13

There may be celebrities who are unknown to some folks.