After listening to the entire soundtrack, these are my impressions.
Overture: Sounds great, and looks like it should be visually stunning.
Day-Lewis: 'Guido's Song' is actually one of my favorite tracks. He actually has some vocal ability, and it shows. 'I Can't Make this Movie' works fine.
Cotillard: A vocal standout. She gets the two contrasting pieces to work with, so it helps. 'My Husband Makes Movies' is one of the best tracks.
Cruz: Sings 'A Call from the Vatican' with the right amount of sexiness and vocals. While much of the song is mostly faking the vocals, the end and the final note are fantastic.
Dench: The first half of "Follies Bergere' was PAINFUL. Once the tempo picked up, the song got better. We'll see how it works on film.
Kidman: Actually, I rather enjoy her 'Unusual Way'. The lowered key really works well for her, and she is able to sing it with raw emotion. Another one of my favorite tracks.
Hudson: The actual soundtrack version works better for Hudson, mainly because she does not sound horribly auto-tuned in some sections as she did in the perviously leaked version. Fun song, and she actually has a very good voice.
Fergie: Best vocal on the soundtrack, but I think we all knew that.
Loren: Well, that was different. If it wasn't Loren, I think people would hate that song.
"Oh look at the time, three more intelligent plays just closed and THE ADDAMS FAMILY made another million dollars" -Jackie Hoffman, Broadway.com Audience Awards