I like a Fine fine line. But, it isn't a duet.
Wicked is a VERY flawed show. I do like it but it is VERY flawed. Everything from the show relying totally on the who is playing the leads to make the performance a good one and not the material. In Avenue Q the material itself is so good that even if the actor flubs or is having a bad night it will still be a good show. If whoever is playing Elphaba goes flat during Wizard and I or Defying Gravity the show is totally lost.
Wicked just uses the technical aspects as a way to make the show. The show seems to be about all the visuals and not the material. I do think that the lyrics to the score of Wicked are the most revolting I have ever heard in musical theatre. I think a 2nd grader could come up with better lyrics then what is in the score for Wicked.
"If you try to shag my husband while I am still alive, I will shove the art of motorcycle maintenance up your rancid little Cu**. That's a good dear"
Tom Stoppard's Rock N Roll