Are Star Wars and The Simpsons the most famous Movies/TV Show of the 20th Century?

[Nizam al-Mulk]

At the risk of going outer space on you, it may be Star Wars movies and Star Trek TV series with all the spinoffs. Critics would say Lucy, All in the Family, MASH or MTM, but for most famous in TV it would be tough to top Gene Roddenberry.

Trek has a loyal fanbase but is not a megabeast, there are probably tv series in China and India that are more watched or have similar reach.