What made this series excellent (in addition to the writing) was the cast of actors and the characters they played, Louie, Alex, Latka, Jim, Banta, Nardo, et al. "Taxi" was, in short, among the best sitcoms ever on TV. Happily it can all be seen again on DVD.
All the episodes in this first season are good, but the funniest to me was Class Reunion, when Wheeler goes as Louie. The finale was a real surprise and very funny.
I was never much of a fan of the family sitcoms, except "All in the Family." The really good ones were Barney Miller, Cheers, and, of course, "Taxi." If you've never seen the latter, get this now. Or if you saw them all, you don't need this recommendation.