A Triple Threat
Being the star of the show, Alan Alda has done more than just act during the course of the series. He wrote thirteen episodes and directed many more as well. On top of that, he was the first person to win an Emmy for writing, directing, and also acting on the same show. A clear triple threat, Alda made his work look easy when it was not.
Advertiser-Friendly
At the start of the show, advertising during the show cost $30,000. It is natural to assume the advertisers only hoped they would make back the money with a profit too. As the show became more and more popular, the cost of advertising only rose. By the finale, which broke viewing records, it cost a staggering $450,000 to advertise during the show.