Diana Krall - What are your thoughts?

I have not listened a great deal to Diana Krall.  However, a few of my Christmas CD compilations include her holiday songs.  I can understand the attraction of her music -- she is attractive and has a sulky, seductive raspy voice -- but she only seems to blurt out lyrics in a rat-a-tat fashion.  She doesn't hold a note very long and if you focus on that fact while listening to her it only seems to get worse.

What are your thoughts on her body of work?  I would appreciate comments and ideas on song selection which would prove me right or wrong.