The later seasons had their moments here and there but, generally speaking, stick with the first 5 seasons.
I thought that Season 7 (LD's last season) was a renaissance year for the show. From George's engagement, right up until Susan's death, I thought they hit it out of the park with almost every episode that year (The Rye, The Soup Nazi, The Cadillac, etc.).
I agree that the characters became a parody of themselves in the last two seasons,
BUT it was still better than 90% of the sitcoms on television at that time.
