There are two court room episodes that are synonymous with sitcom history. The first is the episode of The Brady Bunch where Mike saves Carol from a false law suit by dropping a brief case causing the plaintiff's fake neck brace to be exposed. The other is of course the Seinfeld finale.
While this is not as infamous as those two, this was a truly great laffer. Every scene was hilarious, nearly every line was pure gold, and this is just Becker at its best. You can make an argument that the show peaked after this three part episode, as it was truly difficult to follow up with this.