In a new book, the “Seinfeld” and “S.N.L.” writer shares the secrets to the perfect toast: don’t drink too much, and, remember, the Gettysburg Address was only two minutes long.

Sitcoms have a way of sticking with people. They are simple shows, but somehow they end up lasting longer than almost anything else on TV.

To mark the 20th anniversary of the premiere, THR talked with some of the people who were there at the start — the writers of ...