Sept. 11 is most memorable tv moment, study finds - Article Photos 1/16

FILE - This April 28, 1999 file photo shows an unidentified woman with15 crosses posted on a hill above Columbine High School in Littleton, Colo. Wednesday, April 28, 1999 in remembrance of the 15 people who died during a school shooting on April 20. Sony Electronics and the Nielsen television research company collaborated on a survey ranking TV's most memorable moments. Other TV events include, the Sept. 11 attacks in 2001, Hurricane Katrina in 2005, the O.J. Simpson murder trial verdict in 1995 and the death of Osama bin Laden in 2011. (AP Photo/Eric Gay, file) ORG XMIT: NYET124