On this day: November 21

Published On: Nov 20 2012 02:35:16 AM CST   Updated On: Nov 21 2013 01:00:00 AM CST

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.