Historical clue formulations

• Ed McMahon intro words — 2014-05-07
• Memorable movie line spoken by ... Jack Nicholson — 2013-04-10
• Classic TV intro ... or a hint to the starts of 16-, 22-, 30-, 42- and 47-Across — 2010-12-27
• Old "Tonight Show" intro — 2007-09-24
• Old "Tonight Show" intro — 2004-03-09