- 1921 - First Inflight Movie - Aeromarine Airways showed HOWDY CHICAGO to its passengers as the amphibian airplane flew around Chicago.
- 1961 - First feature film exhibited on a regularly scheduled commercial airline flight (TWA B707) - MGM's BY LOVE POSSESSED, starring Lana Turner and Efrem Zimbalist Jr.
- 1962 - American & Pan Am install TV monitors in first class of a Lockheed Electra Aircraft.
- 1962, AVID Airline Products develops and manufactures the first pneumatic headset used onboard the airlines and provides them to TWA.
- 1971 - Trans Com develops the 8mm film cassette. Flight attendants could now change movies inflight and add short subject programming.
- 1975 - Braniff Airways introduces Atari video games onboard flights.
- 1984 - Airfone introduces the world's first inflight telephone system on American Airlines.
- 1988 - Airvision introduces the world's first in-seat video system, using 2.7-inch LCD displays. Northwest trials the system on a B747 with positive passenger reaction.
- 1989 - American Airlines makes first fleet-wide installation (B767) of in-seat video in first class (Avicom).
- 1991 - Virgin Atlantic Airways offers seat-back video in all classes (including economy).
- 1996 - First installation of Inseat Power Outlets, on Delta Air Lines.
- 1996 -- Live television premiered on a Delta Air Lines B767 to support the Atlanta Olympics.
- 2000 - In April JetBlue introduces live (via satellite) inflight television fleetwide in all cabins.
- 2004 - Lufthansa German Airlines, on 17 May 2004, launched the Connexion By Boeing real-time, wireless-based high-speed Internet connectivity service on an A340-300 flying the Munich-to-Los Angeles route.
This great list was sniped from the WAEA Headquarters page here