Kelsey Grammer should probably join the cast full-time because he is better here than he was on anything since Frasier. That being said, his storyline was still outrageous and they could have done more to mock the Lincoln play.
The Liz storyline was awful as well. This show cannot resort to standard sitcom cliches, the cast does not work well in that environment and Liz is not your typical female lead, yet this season she has been written as such.
Better, but not there yet.