mcgaugh... >> henner: it's so nice to meet you. >> mcgaugh: i'm jim. >> stahl: ...to have her memoryy put to the test. there was a session in his office... >> mcgaugh: do you know when john lennon was killed? >> henner: yes, that was december 8, 1980, and that was a monday. >> stahl: ...a round of standard memory tests... >> go ahead and put them in the order they were presented to you. >> stahl: ...the public events quiz. >> delta airline flight 191 crashes near dallas, texas. >> henner: oh, i know exactly when that happened because all of a sudden i was at my... it was august the second of 1985. it was a friday. >> stahl: after seven hours of grilling... >> mcgaugh: october 1, 8, 15, 22. >> stahl: ...mcgaugh and his collaborator, neuroscientist larry cahill, officially anointed marilu henner superior autobiographical memory subject number six. >> larry cahill: extremely impressive. >> stahl: you really do remember your whole life. >> henner: it's like putting in a dvd and it cues up to a certain place. i'm there again. so, i'm looking out from my eyes and seeing things visually as