Saw it tonight. I previously saw productions in the 70s (with Robert Ryan, Bert Convy, Helen Hayes, etc.), and then the Lincoln Center production with Lithgow and Thomas. I thought it was perfect both times.
This time, I felt that the first act exposition was a little arduous, as others have mentioned. I can't help thinking that Jack O'Brian should have taken a pencil and made some cuts to what is still a terrific script. To start with, I think with a little adjustment the entire Micah Stock role could be eliminated, helping to tighten the first act. His role came across to me as stupid, which is not a criticism of him as an actor, but of the decision to give him that ridiculous accent, and not make some prudent cuts to what his character has to say, since it is totally unessential to the play. 60 seconds discussing hamburgers and ketchup is 60 seconds too much.
It definitely got better as it went along. The only other real criticisms:
-- John Slattery was solid, but he seemed to me to be 15 or so years too old for the role. Robert Morse is 40 years too old for his role, but it doesn't matter. It is not a lead role and he nails the nebbishness of the character in an endearing performance.
-- I thought the woman who played his girl friend was too shrill or whiny...cant decide. Either way, I can't believe he would have left Chicago for her.
The best thing about the show was clearly Nathan Lane. Even though he arrived late in the show, he owned it. It was a joy to watch him every minute. I also thought that Jefferson Mays was terrific as an OCD suffering prig...he got every laugh possible out of that role. I also thought that Sherie Rene Scott brought some depth to the role of Mollie that I had not seen before. I also enjoyed John Goodman very much.
So, I would say Act 1 gets a 'C' rating, Act 2 gets a 'B', and Act 3 gets an 'A-'. Nathan's reading of the immortal last line was positively perfect.