I have to admit that I don't get all this Jan Maxwell love. I thought she was very good in The Royal Family, but she could not compare to Rosemary Harris, admittedly almost 40 years earlier. I thought she was only okay as Phyllis. Her acting was fine, I thought she did a great job with Could I Leave You, but she completely botched Lucy and Jessie, which has always been the highlight of the show for me...her movement was plain awful. As Phyllis, I have seen Alexis Smith, Diana Riggs, Blythe Danner, Donna Murphy (the best in my opinion) and her. I honestly thought hers was the most forgettable. I did not like her performance in Entertaining Mr. Sloane, and agree with a prior poster that she was probably miscast.
I admit that I have not seen her in Coram Boy or Lend Me A Tenor or A Doll's House, which might have made a difference in my overall opinion of her.