Early Start with John Berman & Christine Romans

9/11 attacks, O.J. Simpson verdict top list of powerful TV moments in last 50 years

Real life tragedy and drama topping a list of the most powerful TV moments of the past 50 years. Nielsen and Sony electronics conducted the survey.

The top five moments on the survey are:

* September 11 terrorist attacks

* Hurricane Katrina

* O.J. Simpson verdict

* Challenger space shuttle explosion

* Death of Osama Bin Laden

On "Early Start" this morning, Ashleigh pointed out two major events that weren't on the top of the list: The moon landing and the JFK assassination.

What TV moments would you add to this list? Share your submissions in the comments below.