Berta was the best character of the show.

Her comedic timing just bounces right off of any line or situation involving any character in her scenes. Granted the comedic element is written in, but she fires it off like no one can.

Except maybe for Holland Taylor (Evelyn). They are both by far the funniest characters in the series. Not that the rest aren't funny, but the series would likely have tanked earlier without them. Well, in my opinion anyway.

Berta often get a lot of great lines, but her timing in delivering them was flawless. The whole cast just clicked.