On this day: November 21

POSTED: 12:35 AM PST Nov 20, 2012    UPDATED: 11:00 PM PST Nov 20, 2014 
Sylvester Stallone in Rocky

Thomas Edison announces the phonograph, "Frankenstein" and "Rocky" premiere 45 years apart, Tweety Bird makes his debut, and millions tune in to find out "who shot J.R.," all on this day.